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Video Tutorials

Entering preop data



Postop data for SIA and IOL calculations



Analyzing and downloading your data



References

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