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<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="logicalmodel-Visualfieldmeasurement-R4" />
  <url value="http://linkehr.com/fhir/logicalmodel-visualfieldmeasurement-R4" />
  <identifier>
    <system value="openEHR-CKM" />
    <value value="openEHR-EHR-OBSERVATION.visual_field_measurement.v0" />
  </identifier>
  <version value="0" />
  <name value="Visualfieldmeasurement" />
  <title value="Visual field measurement" />
  <status value="draft" />
  <date value="2024-06-18" />
  <publisher value="openEHR" />
  <contact>
    <telecom>
      <system value="url" />
      <value value="http://www.veratech.es" />
    </telecom>
  </contact>
  <description value="Results of visual field testing / perimetry." />
  <purpose value="To record the results of visual field testing or perimetry." />
  <fhirVersion value="4.0.0" />
  <mapping>
    <identity value="openEHR" />
    <uri value="http://openehr.org" />
    <name value="openEHR Mapping" />
  </mapping>
  <mapping>
    <identity value="openEHR-natural" />
    <uri value="http://openehr.org" />
    <name value="openEHR natural path" />
  </mapping>
  <kind value="logical" />
  <abstract value="false" />
  <type value="StructureDefinition" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Element" />
  <snapshot>
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      <short value="Visual field measurement" />
      <definition value="Results of visual field testing / perimetry." />
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      <mustSupport value="true" />
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      <short value="Tree" />
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      <short value="Device details" />
      <definition value="Details of the device used to measure visual fields." />
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    <element id="Visual_field_measurement.protocol.Acquisition_details">
      <path value="Visual_field_measurement.protocol.Acquisition_details" />
      <short value="Acquisition details" />
      <definition value="Details about the strategy to conduct the visual field test." />
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        <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result_name" />
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      <short value="Clinical description" />
      <definition value="Narrative description of the overall findings observed during the test." />
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      <short value="Test result" />
      <definition value="Details of the visual field test result for each eye." />
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        <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result" />
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      <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Eye_examined" />
      <short value="Eye examined" />
      <definition value="The eye which is being examined." />
      <min value="0" />
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      <base>
        <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Eye_examined" />
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      <short value="Eye examined" />
      <definition value="The eye which is being examined." />
      <min value="0" />
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        <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Eye_examined.value" />
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      <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Glaucoma_Hemifield_Test_(GHT)" />
      <short value="Glaucoma Hemifield Test (GHT)" />
      <definition value="A coded intepretation of the Glaucoma Hemifield Test (GHT)." />
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      <max value="1" />
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      <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Glaucoma_Hemifield_Test_(GHT).value" />
      <short value="Glaucoma Hemifield Test (GHT)" />
      <definition value="A coded intepretation of the Glaucoma Hemifield Test (GHT)." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Glaucoma_Hemifield_Test_(GHT).value" />
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      <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Foveal_sensitivity_measured" />
      <short value="Foveal sensitivity measured" />
      <definition value="Whether foveal sensitivity was measured." />
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      <short value="Foveal sensitivity measured" />
      <definition value="Whether foveal sensitivity was measured." />
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        <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Foveal_sensitivity_measured.value" />
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      <type>
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      <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Foveal_sensitivity" />
      <short value="Foveal sensitivity" />
      <definition value="Foveal Sensitivity is the reciprocal of foveal threshold (1/foveal threshold), in dB." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Foveal_sensitivity" />
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      <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Foveal_sensitivity.value" />
      <short value="Foveal sensitivity" />
      <definition value="Foveal Sensitivity is the reciprocal of foveal threshold (1/foveal threshold), in dB." />
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      <max value="1" />
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      <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Visual_Field_Index_(VFI)" />
      <short value="Visual Field Index (VFI)" />
      <definition value="Visual Field Index result." />
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      <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Visual_Field_Index_(VFI).value" />
      <short value="Visual Field Index (VFI)" />
      <definition value="Visual Field Index result." />
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      <type>
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    <element id="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Mean_Deviation_(MD)">
      <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Mean_Deviation_(MD)" />
      <short value="Mean Deviation (MD)" />
      <definition value="Weighted average deviation from the age corrected normal field, in dB." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Mean_Deviation_(MD)" />
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    <element id="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Mean_Deviation_(MD).value">
      <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Mean_Deviation_(MD).value" />
      <short value="Mean Deviation (MD)" />
      <definition value="Weighted average deviation from the age corrected normal field, in dB." />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Mean_Deviation_(MD).value" />
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      <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Mean_Deviation_P_(MD)" />
      <short value="Mean Deviation P (MD)" />
      <definition value="The P value of the Mean Deviation result." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Mean_Deviation_P_(MD)" />
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    <element id="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Mean_Deviation_P_(MD).value">
      <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Mean_Deviation_P_(MD).value" />
      <short value="Mean Deviation P (MD)" />
      <definition value="The P value of the Mean Deviation result." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Mean_Deviation_P_(MD).value" />
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      <type>
        <code value="Ratio" />
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      <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Pattern_Standard_Deviation_(PSD)" />
      <short value="Pattern Standard Deviation (PSD)" />
      <definition value="Average of non-uniform visual field loss or weighted square root of loss variance, in dB." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Pattern_Standard_Deviation_(PSD)" />
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    <element id="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Pattern_Standard_Deviation_(PSD).value">
      <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Pattern_Standard_Deviation_(PSD).value" />
      <short value="Pattern Standard Deviation (PSD)" />
      <definition value="Average of non-uniform visual field loss or weighted square root of loss variance, in dB." />
      <min value="1" />
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      <base>
        <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Pattern_Standard_Deviation_(PSD).value" />
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      <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Pattern_Standard_Deviation_P_(PSD)" />
      <short value="Pattern Standard Deviation P (PSD)" />
      <definition value="The P value of the Pattern Standard deviation result." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Pattern_Standard_Deviation_P_(PSD)" />
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      <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Pattern_Standard_Deviation_P_(PSD).value" />
      <short value="Pattern Standard Deviation P (PSD)" />
      <definition value="The P value of the Pattern Standard deviation result." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Pattern_Standard_Deviation_P_(PSD).value" />
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      <type>
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      <path value="Visual_field_measurement.Event_Series.Any_event.data.Test_result.Short_Term_Fluctuation_(SF)" />
      <short value="Short-Term Fluctuation (SF)" />
      <definition value="Average deviation of sensitivity for the repeated test locations, in dB. This is used to determine the consistency of the patient’s responses." />
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      <short value="Short-Term Fluctuation (SF)" />
      <definition value="Average deviation of sensitivity for the repeated test locations, in dB. This is used to determine the consistency of the patient’s responses." />
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      <base>
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      <short value="Corrected Pattern Standard Deviation (CPSD)" />
      <definition value="Weighted square root of loss variance corrected for short term fluctuation, in dB." />
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      <short value="Corrected Pattern Standard Deviation (CPSD)" />
      <definition value="Weighted square root of loss variance corrected for short term fluctuation, in dB." />
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{

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