{
  "package" : "hl7.fhir.r4.examples@4.0.1",
  "definition" : "The Haigis-L IOL calculation formula. Haigis W. Intraocular lens calculation after refractive surgery for myopia: Haigis-L formula. J Cataract Refract Surg. 2008 Oct;34(10):1658-63",
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