{
  "package" : "hl7.fhir.r4.examples@4.0.1",
  "definition" : "Threshold test algorithm that determines a patient's sensitivity at each test point in the threshold test pattern by adjusting intensity by 4 dB steps until the patient changes their response, and then adjusts the intensity in the opposite direction by 2 dB steps until the patient changes their response again. The last stimulus seen by the patient is recognized as the threshold for that point. The starting values are determined by first thresholding a \\\"primary\\\" point in each quadrant then using the results of each primary point to determine the starting values for neighboring points",
  "system" : "http://dicom.nema.org/resources/ontology/DCM",
  "property" : [ ],
  "codesystem" : "5f336dd4-db81-5653-939a-25648922f08e",
  "concept_id" : "fd665235-4aeb-52c9-9e84-653a5da1519a",
  "ancestors" : {
    "111818" : 0
  },
  "id" : "ade03fb8-b9f4-4ebb-8db5-5050811dc2a7",
  "code" : "111818",
  "display" : "Visual Field Full Threshold Test Strategy",
  "version" : "01"
}