<StructureDefinition xmlns="http://hl7.org/fhir">
  <url value="https://simplifier.net/zeissveracity/StructureDefinition/vision-prescription-type" />
  <name value="Vision Prescription Type" />
  <!--  snip other metadata  -->
  <kind value="complex-type" />
  <context>
    <type value="element" />
    <expression value="VisionPrescription" />
  </context>
  <type value="Extension" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" />
  <derivation value="constraint" />
  <differential>
    <element>
      <path value="Extension" />
      <short value="Type of Glasses from Veracity" />
      <definition value="A URI that identifies the type of Glasses vision data is" />
      <mustSupport value="false" />
      <isModifier value="false" />
    </element>
    <element>
      <path value="Extension.url" />
      <fixedUri value="https://simplifier.net/zeissveracity/StructureDefinition/vision-prescription-type" />
    </element>
    <element>
      <path value="Extension.valueUri" />
      <short value="The URI value" />
      <min value="0" />
      <max value="1" />
      <type>
        <code value="uri" />
      </type>
      <mustSupport value="true" />
    </element>
    <element>
      <path value="Extension.valueString" />
      <short value="The string value" />
      <min value="0" />
      <max value="1" />
      <type>
        <code value="valueString" />
      </type>
      <mustSupport value="true" />
    </element>
  </differential>
</StructureDefinition>