{
  "package" : "hl7.fhir.r4.examples@4.0.1",
  "definition" : "Modality device that measures visual fields and perform visual perimetry",
  "system" : "http://dicom.nema.org/resources/ontology/DCM",
  "property" : [ ],
  "codesystem" : "5f336dd4-db81-5653-939a-25648922f08e",
  "concept_id" : "6461cd7c-0208-519a-8d10-d20910da8ae8",
  "ancestors" : {
    "OPV" : 0
  },
  "id" : "4ddbdb6c-9fec-4b49-881d-49504985c338",
  "code" : "OPV",
  "display" : "Ophthalmic Visual Field",
  "version" : "01"
}