{
  "package" : "hl7.fhir.r4.core@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" : "edcf6828-b2c8-5028-b7f7-246cb8d5ac80",
  "concept_id" : "2e77a9d2-291a-577f-9e28-4dba4301f554",
  "ancestors" : {
    "111764" : 0
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  "id" : "8fa06874-0da4-4fba-8787-008e90c5a71f",
  "code" : "111764",
  "display" : "Hoffer Q",
  "version" : "01"
}