Accuracy of different intraocular lens calculation formulas of the American Society of Cataract and Refractive Surgery calculator in eyes after corneal refractive laser surgery for hyperopia in multifocal IOL implantation

Session Details

Session Title: IOL Power Calculations, Post-LASIK & Extreme Eyes

Session Date/Time: Tuesday 25/09/2018 | 14:00-16:00

Paper Time: 14:56

Venue: Room A2

First Author: : V.Vrijman THE NETHERLANDS

Co Author(s): :    A. Abulafia   J. van der Linden   I. van der Meulen   M. Mourits   R. Lapid-Gortzak        

Abstract Details

Purpose:

To evaluate the accuracy of different intraocular lens (IOL) power calculation formulas available on the American Society of Cataract and Refractive Surgery calculator in calculating multifocal IOL power in eyes with previous hyperopic corneal refractive laser surgery.

Setting:

Academic Medical Center, University of Amsterdam, Amsterdam, and Retina Total Eye Care, Driebergen, the The Netherlands.

Methods:

Comparison of the accuracy of 3 formulas using historical refractive data, namely the Masket formula, Modified Masket formula and Barrett True-K formula, and 3 formulas using no previous refractive data, namely the Shammas formula, Haigis-L formula and Barrett True-K no History formula. Also the average of all formulas was analyzed and compared with each other.

Results:

Sixty-five eyes were included. The median absolute prediction error ranged from 0.26 D to 0.38 D. The Modified Masket had the highest mean absolute prediction error (P<0.05 in comparison with all other formulas except the Shammas formula (P=0.155)) and the lowest percentage of eyes within ±0.50 D (58.5%).

Conclusions:

All formulas showed a comparable accuracy in predicting IOL power in eyes after hyperopic corneal refractive laser surgery, except for the Modified Masket formula which performed less accurate.

Financial Disclosure:

... receives consulting fees, retainer, or contract payments from a competing company