<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="HdBe-Refraction" />
  <language value="en-US" />
  <extension url="http://hl7.org/fhir/StructureDefinition/resource-effectivePeriod">
    <valuePeriod>
      <start value="2020-09-01T00:00:00+02:00" />
    </valuePeriod>
  </extension>
  <url value="https://fhir.healthdata.be/StructureDefinition/LogicalModel/HdBe-Refraction" />
  <name value="HdBeRefraction">
    <extension url="http://hl7.org/fhir/StructureDefinition/translation">
      <extension url="lang">
        <valueCode value="nl-NL" />
      </extension>
      <extension url="content">
        <valueMarkdown value="HdBeRefractie" />
      </extension>
    </extension>
  </name>
  <title value="HdBe Refraction" />
  <status value="draft" />
  <date value="2022-07-07T15:04:03.2592055+00:00" />
  <publisher value="Healthdata.be (Sciensano)" />
  <contact>
    <name value="Service portal – healthdata.be" />
    <telecom>
      <system value="url" />
      <value value="https://sciensano.service-now.com/sp" />
      <use value="work" />
    </telecom>
  </contact>
  <description value="The refraction measurement is a measurement with which the refractive error of the eye is determined. During the refraction measurement, the necessary correction is established: the spherical power (in diopter), the cylindrical power (in diopter), the axis direction(in degrees) for any cylindrical correction, the prism (in diopter)and any additional power of the reading area (in diopter), the so-called reading addition&#xD;&#xA;#### Purpose&#xD;&#xA;The purpose of a refraction measurement is to determine the correction (through glasses or lenses) with which the patient can see optimally.&#xD;&#xA;&#xD;&#xA;&#xD;&#xA;#### Patient Population&#xD;&#xA;Adults and children from the age that they can interpret a picture chart.">
    <extension url="http://hl7.org/fhir/StructureDefinition/translation">
      <extension url="lang">
        <valueCode value="nl-NL" />
      </extension>
      <extension url="content">
        <valueMarkdown value="De refractiemeting is een meting waarbij de brekingsafwijking van het oog wordt bepaald. Bij de refractiemeting wordt de benodigde correctie bepaald: de sferische sterkte (in dioptrie),de cylindrische sterkte (in dioptrie), de asrichting (in graden) voor de eventuele cilindrische sterkte , de prisma (in dioptrie) en de eventuele extra sterkte van het leesgedeelte (in dioptrie) , de zogenaamde leesadditie.&#xD;&#xA;#### Purpose&#xD;&#xA;Het doel van een refractiemeting is het bepalen van de correctie (door middel van bril of lenzen) waarmee de patiënt optimaal kan zien.&#xD;&#xA;&#xD;&#xA;&#xD;&#xA;#### Patient Population&#xD;&#xA;Volwassenen en kinderen vanaf de leeftijd dat ze een plaatjeskaart kunnen interpreteren." />
      </extension>
    </extension>
  </description>
  <copyright value="Copyright and related rights waived via CC0, https://creativecommons.org/publicdomain/zero/1.0/. This does not apply to information from third parties, for example a medical terminology system. The implementer alone is responsible for identifying and obtaining any necessary licenses or authorizations to utilize third party IP in connection with the specification or otherwise." />
  <fhirVersion value="4.0.1" />
  <kind value="logical" />
  <abstract value="true" />
  <type value="https://fhir.healthdata.be/StructureDefinition/LogicalModel/Refraction" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Element" />
  <derivation value="specialization" />
  <snapshot>
    <element id="Refraction">
      <path value="Refraction" />
      <short value="Refraction">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="Refractie" />
          </extension>
        </extension>
      </short>
      <definition value="Root concept of the Refractie information model.This root concept contains all data elements of the Refraction information model.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="Rootconcept van de bouwsteen Refractie. Dit rootconcept bevat alle gegevenselementen van de bouwsteen Refractie." />
          </extension>
        </extension>
      </definition>
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Refraction" />
        <min value="0" />
        <max value="*" />
      </base>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() | (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Refraction.id">
      <path value="Refraction.id" />
      <representation value="xmlAttr" />
      <short value="xml:id (or equivalent in JSON)" />
      <definition value="unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." />
      <comment value="Note that FHIR strings may not exceed 1MB in size" />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Element.id" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="string" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() | (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Refraction.extension">
      <path value="Refraction.extension" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="url" />
        </discriminator>
        <description value="Extensions are always sliced by (at least) url" />
        <rules value="open" />
      </slicing>
      <short value="Additional Content defined by implementations" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <alias value="extensions" />
      <alias value="user content" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Element.extension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() | (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Refraction.RefractionMeasurementMethod">
      <path value="Refraction.RefractionMeasurementMethod" />
      <short value="RefractionMeasurementMethod">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="RefractieMeetMethode" />
          </extension>
        </extension>
      </short>
      <definition value="The method used to measure the refraction.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="De gebruikte methodiek om de refractie te meten" />
          </extension>
        </extension>
      </definition>
      <comment value="Not all terminology uses fit this general pattern. In some cases, models should not use CodeableConcept and use Coding directly and provide their own structure for managing text, codings, translations and the relationship between elements and pre- and post-coordination." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Refraction.RefractionMeasurementMethod" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="CodeableConcept" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() | (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <binding>
        <strength value="extensible" />
        <description value="RefractionMeasurementMethod codes" />
        <valueSet value="https://fhir.healthdata.be/ValueSet/RefractieMeetMethode" />
      </binding>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="v2" />
        <map value="CE/CNE/CWE" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="CD" />
      </mapping>
      <mapping>
        <identity value="orim" />
        <map value="fhir:CodeableConcept rdfs:subClassOf dt:CD" />
      </mapping>
    </element>
    <element id="Refraction.RefractionDateTime">
      <path value="Refraction.RefractionDateTime" />
      <short value="RefractionDateTime">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="RefractieDatumTijd" />
          </extension>
        </extension>
      </short>
      <definition value="The date and time when the refraction measurement was carried out.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="De datum en tijd waarop de refractie is gemeten." />
          </extension>
        </extension>
      </definition>
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Refraction.RefractionDateTime" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="dateTime" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() | (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Refraction.CilindricalRefraction">
      <path value="Refraction.CilindricalRefraction" />
      <short value="CilindricalRefraction">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="CilindrischeRefractie" />
          </extension>
        </extension>
      </short>
      <definition value="Container of the CilindricalRefraction concept.This container contains all data elements of the CilindricalRefraction concept.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="Container van het concept CilindrischeRefractie. Deze container bevat alle gegevenselementen van het concept CilindrischeRefractie." />
          </extension>
        </extension>
      </definition>
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Refraction.CilindricalRefraction" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="BackboneElement" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() | (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Refraction.CilindricalRefraction.id">
      <path value="Refraction.CilindricalRefraction.id" />
      <representation value="xmlAttr" />
      <short value="xml:id (or equivalent in JSON)" />
      <definition value="unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." />
      <comment value="Note that FHIR strings may not exceed 1MB in size" />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Element.id" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="string" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() | (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Refraction.CilindricalRefraction.extension">
      <path value="Refraction.CilindricalRefraction.extension" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="url" />
        </discriminator>
        <description value="Extensions are always sliced by (at least) url" />
        <rules value="open" />
      </slicing>
      <short value="Additional Content defined by implementations" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <alias value="extensions" />
      <alias value="user content" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Element.extension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() | (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Refraction.CilindricalRefraction.modifierExtension">
      <path value="Refraction.CilindricalRefraction.modifierExtension" />
      <short value="Extensions that cannot be ignored" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <alias value="extensions" />
      <alias value="user content" />
      <alias value="modifiers" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="BackboneElement.modifierExtension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() | (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <isModifier value="true" />
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Refraction.CilindricalRefraction.CylindricalRefractionValue">
      <path value="Refraction.CilindricalRefraction.CylindricalRefractionValue" />
      <short value="CylindricalRefractionValue">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="CilindrischeRefractieWaarde" />
          </extension>
        </extension>
      </short>
      <definition value="The power of the cylinder needed to correct the cylindrical error (astigmatism), expressed in diopters. When a cylindrical refraction is registered, the axis of the cylinder must also be specified.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="Dit is de sterkte van de cylinder die nodig is om de cylindrische afwijking (astigmatisme) te corrigeren, uitgedrukt in dioptrieën, oplopend per 0.25D. Bij een cilindrische refractiewaarde dient ook de as van de cilinder opgegeven te worden." />
          </extension>
        </extension>
      </definition>
      <comment value="The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator." />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Refraction.CilindricalRefraction.CylindricalRefractionValue" />
        <min value="1" />
        <max value="1" />
      </base>
      <type>
        <code value="Quantity" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() | (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="qty-3" />
        <severity value="error" />
        <human value="If a code for the unit is present, the system SHALL also be present" />
        <expression value="code.empty() or system.exists()" />
        <xpath value="not(exists(f:code)) or exists(f:system)" />
        <source value="http://hl7.org/fhir/StructureDefinition/Quantity" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="v2" />
        <map value="SN (see also Range) or CQ" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="PQ, IVL&lt;PQ&gt;, MO, CO, depending on the values" />
      </mapping>
    </element>
    <element id="Refraction.CilindricalRefraction.CilindricRefractionAxis">
      <path value="Refraction.CilindricalRefraction.CilindricRefractionAxis" />
      <short value="CilindricRefractionAxis">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="CilindrischeRefractieAs" />
          </extension>
        </extension>
      </short>
      <definition value="The axis direction of the cylindrical refraction value expressed in degrees.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="De asrichting van de cilindrische refractiewaarde uitgedrukt in graden." />
          </extension>
        </extension>
      </definition>
      <comment value="The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator." />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Refraction.CilindricalRefraction.CilindricRefractionAxis" />
        <min value="1" />
        <max value="1" />
      </base>
      <type>
        <code value="Quantity" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() | (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="qty-3" />
        <severity value="error" />
        <human value="If a code for the unit is present, the system SHALL also be present" />
        <expression value="code.empty() or system.exists()" />
        <xpath value="not(exists(f:code)) or exists(f:system)" />
        <source value="http://hl7.org/fhir/StructureDefinition/Quantity" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="v2" />
        <map value="SN (see also Range) or CQ" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="PQ, IVL&lt;PQ&gt;, MO, CO, depending on the values" />
      </mapping>
    </element>
    <element id="Refraction.Prisma">
      <path value="Refraction.Prisma" />
      <short value="Prisma">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="Prisma" />
          </extension>
        </extension>
      </short>
      <definition value="Container of the Prisma concept.This container contains all data elements of the Prisma container.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="Container van het concept Prisma. Deze container bevat alle gegevenselementen van de container Prisma." />
          </extension>
        </extension>
      </definition>
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Refraction.Prisma" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="BackboneElement" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() | (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Refraction.Prisma.id">
      <path value="Refraction.Prisma.id" />
      <representation value="xmlAttr" />
      <short value="xml:id (or equivalent in JSON)" />
      <definition value="unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." />
      <comment value="Note that FHIR strings may not exceed 1MB in size" />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Element.id" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="string" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() | (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Refraction.Prisma.extension">
      <path value="Refraction.Prisma.extension" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="url" />
        </discriminator>
        <description value="Extensions are always sliced by (at least) url" />
        <rules value="open" />
      </slicing>
      <short value="Additional Content defined by implementations" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <alias value="extensions" />
      <alias value="user content" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Element.extension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() | (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Refraction.Prisma.modifierExtension">
      <path value="Refraction.Prisma.modifierExtension" />
      <short value="Extensions that cannot be ignored" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <alias value="extensions" />
      <alias value="user content" />
      <alias value="modifiers" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="BackboneElement.modifierExtension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() | (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <isModifier value="true" />
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Refraction.Prisma.PrismaValue">
      <path value="Refraction.Prisma.PrismaValue" />
      <short value="PrismaValue">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="PrismaWaarde" />
          </extension>
        </extension>
      </short>
      <definition value="The power of the prism, expressed in diopters.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="De sterkte van de prisma, uitgedrukt in dioptrieën." />
          </extension>
        </extension>
      </definition>
      <comment value="The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator." />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Refraction.Prisma.PrismaValue" />
        <min value="1" />
        <max value="1" />
      </base>
      <type>
        <code value="Quantity" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() | (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="qty-3" />
        <severity value="error" />
        <human value="If a code for the unit is present, the system SHALL also be present" />
        <expression value="code.empty() or system.exists()" />
        <xpath value="not(exists(f:code)) or exists(f:system)" />
        <source value="http://hl7.org/fhir/StructureDefinition/Quantity" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="v2" />
        <map value="SN (see also Range) or CQ" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="PQ, IVL&lt;PQ&gt;, MO, CO, depending on the values" />
      </mapping>
    </element>
    <element id="Refraction.Prisma.PrismaBase">
      <path value="Refraction.Prisma.PrismaBase" />
      <short value="PrismaBase">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="PrismaBasis" />
          </extension>
        </extension>
      </short>
      <definition value="The base of the prism, expressed in degrees.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="De basis van de prisma, uitgedrukt in graden." />
          </extension>
        </extension>
      </definition>
      <comment value="The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator." />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Refraction.Prisma.PrismaBase" />
        <min value="1" />
        <max value="1" />
      </base>
      <type>
        <code value="Quantity" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() | (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="qty-3" />
        <severity value="error" />
        <human value="If a code for the unit is present, the system SHALL also be present" />
        <expression value="code.empty() or system.exists()" />
        <xpath value="not(exists(f:code)) or exists(f:system)" />
        <source value="http://hl7.org/fhir/StructureDefinition/Quantity" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="v2" />
        <map value="SN (see also Range) or CQ" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="PQ, IVL&lt;PQ&gt;, MO, CO, depending on the values" />
      </mapping>
    </element>
    <element id="Refraction.SfericRefraction">
      <path value="Refraction.SfericRefraction" />
      <short value="SfericRefraction">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="SferischeRefractie" />
          </extension>
        </extension>
      </short>
      <definition value="Container of the SfericRefraction concept.This container contains all data elements of the SfericRefraction concept.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="Container van het concept SferischeRefractie. Deze container bevat alle gegevenselementen van het concept SferischeRefractie." />
          </extension>
        </extension>
      </definition>
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Refraction.SfericRefraction" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="BackboneElement" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() | (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Refraction.SfericRefraction.id">
      <path value="Refraction.SfericRefraction.id" />
      <representation value="xmlAttr" />
      <short value="xml:id (or equivalent in JSON)" />
      <definition value="unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." />
      <comment value="Note that FHIR strings may not exceed 1MB in size" />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Element.id" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="string" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() | (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Refraction.SfericRefraction.extension">
      <path value="Refraction.SfericRefraction.extension" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="url" />
        </discriminator>
        <description value="Extensions are always sliced by (at least) url" />
        <rules value="open" />
      </slicing>
      <short value="Additional Content defined by implementations" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <alias value="extensions" />
      <alias value="user content" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Element.extension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() | (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Refraction.SfericRefraction.modifierExtension">
      <path value="Refraction.SfericRefraction.modifierExtension" />
      <short value="Extensions that cannot be ignored" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <alias value="extensions" />
      <alias value="user content" />
      <alias value="modifiers" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="BackboneElement.modifierExtension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() | (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <isModifier value="true" />
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Refraction.SfericRefraction.SfericRefractionValue">
      <path value="Refraction.SfericRefraction.SfericRefractionValue" />
      <short value="SfericRefractionValue">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="SferischeRefractieWaarde" />
          </extension>
        </extension>
      </short>
      <definition value="The spherical spectacle strength power needed to correct nearsightedness (myopia) or farsightedness (hyperopia), expressed in diopters, ascending by 0.25D.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="De sferische brilsterkte die nodig is om bijziendheid (myopie) of verziendheid (hypermetropie) te corrigeren, uitgedrukt in dioptrieën, oplopend per 0.25D." />
          </extension>
        </extension>
      </definition>
      <comment value="The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator." />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Refraction.SfericRefraction.SfericRefractionValue" />
        <min value="1" />
        <max value="1" />
      </base>
      <type>
        <code value="Quantity" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() | (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="qty-3" />
        <severity value="error" />
        <human value="If a code for the unit is present, the system SHALL also be present" />
        <expression value="code.empty() or system.exists()" />
        <xpath value="not(exists(f:code)) or exists(f:system)" />
        <source value="http://hl7.org/fhir/StructureDefinition/Quantity" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="v2" />
        <map value="SN (see also Range) or CQ" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="PQ, IVL&lt;PQ&gt;, MO, CO, depending on the values" />
      </mapping>
    </element>
    <element id="Refraction.SfericRefraction.SfericalEquivalent">
      <path value="Refraction.SfericRefraction.SfericalEquivalent" />
      <short value="SfericalEquivalent">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="SferischEquivalent" />
          </extension>
        </extension>
      </short>
      <definition value="The spherical power added to half of the cylindrical power. Expressed in diopters, ascending by 0.1D. Some equipment automatically calculates the spherical equivalent automatically.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="De sferische sterkte en halve cylindrische sterkte bij elkaar opgeteld. Wordt uitgedrukt in dioptrieën, oplopend per 0.25D. Door sommige apparatuur wordt de sferische equivalent automatisch berekend." />
          </extension>
        </extension>
      </definition>
      <comment value="The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Refraction.SfericRefraction.SfericalEquivalent" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="Quantity" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() | (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="qty-3" />
        <severity value="error" />
        <human value="If a code for the unit is present, the system SHALL also be present" />
        <expression value="code.empty() or system.exists()" />
        <xpath value="not(exists(f:code)) or exists(f:system)" />
        <source value="http://hl7.org/fhir/StructureDefinition/Quantity" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="v2" />
        <map value="SN (see also Range) or CQ" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="PQ, IVL&lt;PQ&gt;, MO, CO, depending on the values" />
      </mapping>
    </element>
    <element id="Refraction.ReadAddition">
      <path value="Refraction.ReadAddition" />
      <short value="ReadAddition">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="LeesAdditie" />
          </extension>
        </extension>
      </short>
      <definition value="A supplement that is added to the refraction value to determine the strength of the reading glasses, expressed in diopters.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="Een toeslag die wordt opgeteld bij de uitkomst van de refractie waarde om de sterkte van de leesbril te bepalen, uitgedrukt in dioptrieën." />
          </extension>
        </extension>
      </definition>
      <comment value="The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Refraction.ReadAddition" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="Quantity" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() | (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="qty-3" />
        <severity value="error" />
        <human value="If a code for the unit is present, the system SHALL also be present" />
        <expression value="code.empty() or system.exists()" />
        <xpath value="not(exists(f:code)) or exists(f:system)" />
        <source value="http://hl7.org/fhir/StructureDefinition/Quantity" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="v2" />
        <map value="SN (see also Range) or CQ" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="PQ, IVL&lt;PQ&gt;, MO, CO, depending on the values" />
      </mapping>
    </element>
    <element id="Refraction.AnatomicalLocation">
      <path value="Refraction.AnatomicalLocation" />
      <short value="AnatomicalLocation">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="AnatomischeLocatie" />
          </extension>
        </extension>
      </short>
      <definition value="The laterality of the eye whose of which the refraction has been measured.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="De zijdigheid van het oog waarvan de refractie is gemeten." />
          </extension>
        </extension>
      </definition>
      <comment value="References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Refraction.AnatomicalLocation" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="Reference" />
        <targetProfile value="https://fhir.healthdata.be/StructureDefinition/LogicalModel/HdBe-AnatomicalLocation" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() | (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ref-1" />
        <severity value="error" />
        <human value="SHALL have a contained resource if a local reference is provided" />
        <expression value="reference.startsWith('#').not() or (reference.substring(1).trace('url') in %resource.contained.id.trace('ids'))" />
        <xpath value="not(starts-with(f:reference/@value, '#')) or exists(ancestor::*[self::f:entry or self::f:parameter]/f:resource/f:*/f:contained/f:*[f:id/@value=substring-after(current()/f:reference/@value, '#')]|/*/f:contained/f:*[f:id/@value=substring-after(current()/f:reference/@value, '#')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Reference" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="The target of a resource reference is a RIM entry point (Act, Role, or Entity)" />
      </mapping>
    </element>
  </snapshot>
  <differential>
    <element id="Refraction">
      <path value="Refraction" />
      <short value="Refraction">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="Refractie" />
          </extension>
        </extension>
      </short>
      <definition value="Root concept of the Refractie information model.This root concept contains all data elements of the Refraction information model.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="Rootconcept van de bouwsteen Refractie. Dit rootconcept bevat alle gegevenselementen van de bouwsteen Refractie." />
          </extension>
        </extension>
      </definition>
      <min value="0" />
      <max value="*" />
    </element>
    <element id="Refraction.RefractionMeasurementMethod">
      <path value="Refraction.RefractionMeasurementMethod" />
      <short value="RefractionMeasurementMethod">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="RefractieMeetMethode" />
          </extension>
        </extension>
      </short>
      <definition value="The method used to measure the refraction.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="De gebruikte methodiek om de refractie te meten" />
          </extension>
        </extension>
      </definition>
      <min value="0" />
      <max value="1" />
      <type>
        <code value="CodeableConcept" />
      </type>
      <binding>
        <strength value="extensible" />
        <description value="RefractionMeasurementMethod codes" />
        <valueSet value="https://fhir.healthdata.be/ValueSet/RefractieMeetMethode" />
      </binding>
    </element>
    <element id="Refraction.RefractionDateTime">
      <path value="Refraction.RefractionDateTime" />
      <short value="RefractionDateTime">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="RefractieDatumTijd" />
          </extension>
        </extension>
      </short>
      <definition value="The date and time when the refraction measurement was carried out.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="De datum en tijd waarop de refractie is gemeten." />
          </extension>
        </extension>
      </definition>
      <min value="0" />
      <max value="1" />
      <type>
        <code value="dateTime" />
      </type>
    </element>
    <element id="Refraction.CilindricalRefraction">
      <path value="Refraction.CilindricalRefraction" />
      <short value="CilindricalRefraction">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="CilindrischeRefractie" />
          </extension>
        </extension>
      </short>
      <definition value="Container of the CilindricalRefraction concept.This container contains all data elements of the CilindricalRefraction concept.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="Container van het concept CilindrischeRefractie. Deze container bevat alle gegevenselementen van het concept CilindrischeRefractie." />
          </extension>
        </extension>
      </definition>
      <min value="0" />
      <max value="1" />
      <type>
        <code value="BackboneElement" />
      </type>
    </element>
    <element id="Refraction.CilindricalRefraction.CylindricalRefractionValue">
      <path value="Refraction.CilindricalRefraction.CylindricalRefractionValue" />
      <short value="CylindricalRefractionValue">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="CilindrischeRefractieWaarde" />
          </extension>
        </extension>
      </short>
      <definition value="The power of the cylinder needed to correct the cylindrical error (astigmatism), expressed in diopters. When a cylindrical refraction is registered, the axis of the cylinder must also be specified.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="Dit is de sterkte van de cylinder die nodig is om de cylindrische afwijking (astigmatisme) te corrigeren, uitgedrukt in dioptrieën, oplopend per 0.25D. Bij een cilindrische refractiewaarde dient ook de as van de cilinder opgegeven te worden." />
          </extension>
        </extension>
      </definition>
      <min value="1" />
      <max value="1" />
      <type>
        <code value="Quantity" />
      </type>
    </element>
    <element id="Refraction.CilindricalRefraction.CilindricRefractionAxis">
      <path value="Refraction.CilindricalRefraction.CilindricRefractionAxis" />
      <short value="CilindricRefractionAxis">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="CilindrischeRefractieAs" />
          </extension>
        </extension>
      </short>
      <definition value="The axis direction of the cylindrical refraction value expressed in degrees.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="De asrichting van de cilindrische refractiewaarde uitgedrukt in graden." />
          </extension>
        </extension>
      </definition>
      <min value="1" />
      <max value="1" />
      <type>
        <code value="Quantity" />
      </type>
    </element>
    <element id="Refraction.Prisma">
      <path value="Refraction.Prisma" />
      <short value="Prisma">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="Prisma" />
          </extension>
        </extension>
      </short>
      <definition value="Container of the Prisma concept.This container contains all data elements of the Prisma container.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="Container van het concept Prisma. Deze container bevat alle gegevenselementen van de container Prisma." />
          </extension>
        </extension>
      </definition>
      <min value="0" />
      <max value="1" />
      <type>
        <code value="BackboneElement" />
      </type>
    </element>
    <element id="Refraction.Prisma.PrismaValue">
      <path value="Refraction.Prisma.PrismaValue" />
      <short value="PrismaValue">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="PrismaWaarde" />
          </extension>
        </extension>
      </short>
      <definition value="The power of the prism, expressed in diopters.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="De sterkte van de prisma, uitgedrukt in dioptrieën." />
          </extension>
        </extension>
      </definition>
      <min value="1" />
      <max value="1" />
      <type>
        <code value="Quantity" />
      </type>
    </element>
    <element id="Refraction.Prisma.PrismaBase">
      <path value="Refraction.Prisma.PrismaBase" />
      <short value="PrismaBase">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="PrismaBasis" />
          </extension>
        </extension>
      </short>
      <definition value="The base of the prism, expressed in degrees.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="De basis van de prisma, uitgedrukt in graden." />
          </extension>
        </extension>
      </definition>
      <min value="1" />
      <max value="1" />
      <type>
        <code value="Quantity" />
      </type>
    </element>
    <element id="Refraction.SfericRefraction">
      <path value="Refraction.SfericRefraction" />
      <short value="SfericRefraction">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="SferischeRefractie" />
          </extension>
        </extension>
      </short>
      <definition value="Container of the SfericRefraction concept.This container contains all data elements of the SfericRefraction concept.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="Container van het concept SferischeRefractie. Deze container bevat alle gegevenselementen van het concept SferischeRefractie." />
          </extension>
        </extension>
      </definition>
      <min value="0" />
      <max value="1" />
      <type>
        <code value="BackboneElement" />
      </type>
    </element>
    <element id="Refraction.SfericRefraction.SfericRefractionValue">
      <path value="Refraction.SfericRefraction.SfericRefractionValue" />
      <short value="SfericRefractionValue">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="SferischeRefractieWaarde" />
          </extension>
        </extension>
      </short>
      <definition value="The spherical spectacle strength power needed to correct nearsightedness (myopia) or farsightedness (hyperopia), expressed in diopters, ascending by 0.25D.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="De sferische brilsterkte die nodig is om bijziendheid (myopie) of verziendheid (hypermetropie) te corrigeren, uitgedrukt in dioptrieën, oplopend per 0.25D." />
          </extension>
        </extension>
      </definition>
      <min value="1" />
      <max value="1" />
      <type>
        <code value="Quantity" />
      </type>
    </element>
    <element id="Refraction.SfericRefraction.SfericalEquivalent">
      <path value="Refraction.SfericRefraction.SfericalEquivalent" />
      <short value="SfericalEquivalent">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="SferischEquivalent" />
          </extension>
        </extension>
      </short>
      <definition value="The spherical power added to half of the cylindrical power. Expressed in diopters, ascending by 0.1D. Some equipment automatically calculates the spherical equivalent automatically.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="De sferische sterkte en halve cylindrische sterkte bij elkaar opgeteld. Wordt uitgedrukt in dioptrieën, oplopend per 0.25D. Door sommige apparatuur wordt de sferische equivalent automatisch berekend." />
          </extension>
        </extension>
      </definition>
      <min value="0" />
      <max value="1" />
      <type>
        <code value="Quantity" />
      </type>
    </element>
    <element id="Refraction.ReadAddition">
      <path value="Refraction.ReadAddition" />
      <short value="ReadAddition">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="LeesAdditie" />
          </extension>
        </extension>
      </short>
      <definition value="A supplement that is added to the refraction value to determine the strength of the reading glasses, expressed in diopters.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="Een toeslag die wordt opgeteld bij de uitkomst van de refractie waarde om de sterkte van de leesbril te bepalen, uitgedrukt in dioptrieën." />
          </extension>
        </extension>
      </definition>
      <min value="0" />
      <max value="1" />
      <type>
        <code value="Quantity" />
      </type>
    </element>
    <element id="Refraction.AnatomicalLocation">
      <path value="Refraction.AnatomicalLocation" />
      <short value="AnatomicalLocation">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="AnatomischeLocatie" />
          </extension>
        </extension>
      </short>
      <definition value="The laterality of the eye whose of which the refraction has been measured.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
          <extension url="lang">
            <valueCode value="nl-NL" />
          </extension>
          <extension url="content">
            <valueMarkdown value="De zijdigheid van het oog waarvan de refractie is gemeten." />
          </extension>
        </extension>
      </definition>
      <min value="0" />
      <max value="1" />
      <type>
        <code value="Reference" />
        <targetProfile value="https://fhir.healthdata.be/StructureDefinition/LogicalModel/HdBe-AnatomicalLocation" />
      </type>
    </element>
  </differential>
</StructureDefinition>