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Entering preop data

Postop data for SIA and IOL calculations

Analyzing and downloading your data


IOL formula

  1. Retzlaff JA, Sanders DR, Kraff MC. Development of the SRK/T intraocular lens implant power calculation formula. J Cataract Refract Surg. 1990 May;16(3):333-40.
  2. Hoffer KJ. The Hoffer Q formula: a comparison of theoretic and regression formulas. J Cataract Refract Surg. 1993 Nov;19(6):700-12.
  3. 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 Jan;14(1):17-24.

Surgically induced astigmatism

  1. Morlet N, Minassian D, Dart J. Astigmatism and the analysis of its surgical correction. Br J Ophthalmol. 2001 Sep;85(9):1127-38.
  2. Holladay JT, Dudeja DR, Koch DD. Evaluating and reporting astigmatism for individual and aggregate data. J Cataract Refract Surg. 1998 Jan;24(1):57-65.
  3. Kristian Næser. Assessment and Statistics of Surgically Induced Astigmatism. Acta Ophthalmologica Scandinavica Thesis