Development of a universal toric intraocular lens calculator

David Hjelmstad; Samir I. Sayegh M.D.

doi:10.1117/12.2041031

3 March 2014 Development of a universal toric intraocular lens calculator

Proceedings Volume 8930, Ophthalmic Technologies XXIV; 89301L (2014) https://doi.org/10.1117/12.2041031
Event: SPIE BiOS, 2014, San Francisco, California, United States

Abstract

We present a method for calculating the ideal toric lens to implant in astigmatic patients following cataract surgery. We show that the online calculators provided by major toric IOL manufacturers are insufficient for both theoretical and practical reasons. We reveal important theoretical shortcomings in their approach, illustrated by a number of cases which demonstrate how the approach can lead to errors in lens selection. Our approach combines the spherical and cylindrical power calculations into one, and allows for lens data from any manufacturer to be used, eliminating the reliance on multiple programs.

Citation Download Citation

David Hjelmstad and Samir I. Sayegh M.D. "Development of a universal toric intraocular lens calculator", Proc. SPIE 8930, Ophthalmic Technologies XXIV, 89301L (3 March 2014); https://doi.org/10.1117/12.2041031

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