{
  "package" : "hl7.fhir.r4.core@4.0.1",
  "definition" : "The Holladay 1 IOL calculation formula. Holladay JT, Prager TC, Chandler TY, Musgrove KH, Lewis JW, Ruiz RS. A three-part system for refining intraocular lens power calculations. J Cataract Refract Surg. 1988; 14:17-24",
  "system" : "http://dicom.nema.org/resources/ontology/DCM",
  "property" : [ ],
  "codesystem" : "edcf6828-b2c8-5028-b7f7-246cb8d5ac80",
  "concept_id" : "d292b4d1-5b31-540c-b6f0-19627052fa31",
  "ancestors" : {
    "111762" : 0
  },
  "id" : "2127e46f-6cbd-44d1-b5f1-6af69bdc5db0",
  "code" : "111762",
  "display" : "Holladay 1",
  "version" : "01"
}