{
  "package" : "hl7.fhir.r4.examples@4.0.1",
  "definition" : "The Hoffer Q IOL calculation formula. Hoffer KJ. The Hoffer Q formula: a comparison of theoretic and regression formulas. J Cataract Refract Surg 1993;19:700-12. Errata. J Cataract Refract Surg 1994;20:677 and 2007;33:2-3",
  "system" : "http://dicom.nema.org/resources/ontology/DCM",
  "property" : [ ],
  "codesystem" : "5f336dd4-db81-5653-939a-25648922f08e",
  "concept_id" : "2e77a9d2-291a-577f-9e28-4dba4301f554",
  "ancestors" : {
    "111764" : 0
  },
  "id" : "1be33885-1226-4980-a576-6ac2ec64cbb4",
  "code" : "111764",
  "display" : "Hoffer Q",
  "version" : "01"
}