Posters

Comparison of intraocular lens power formulas using optical low coherence reflectometry in cataract patients

Poster Details

First Author: G.Kaya TURKEY

Co Author(s):                        

Abstract Details

Purpose:

: To compare the accuracy of various biometric formulas for predicting postoperative refraction determined using an optical low-coherence reflectometry device.

Setting:

Department of Ophthalmology, Kagıthane State Hospital

Methods:

All eyes were divided into three groups according to axial length; short (<22.0 mm), average (22.0–24.5 mm),and long (>24.5 mm) eyes. The mean error and the mean absolute error values (MAE) were calculated for fi ve various IOL formulas (Haigis, Hoffer Q, SRK/T, Holladay 1, and SRK II) were compared.

Results:

The mean absolute errors of 87.5 % of the eyes were within 1 D and of 98.3% were within 2 D. MAE values, in short eyes, for Haigis, Hoffer Q, SRK/T, Holladay 1 and SRK II formulas were 0.35±0.25 D, 0.31±0.27 D, 0.41±0.29 D, 0.43±0.52 D and 0.45±0.31 D, respectively. In average eyes MAE values were 0.51±0.45 D, 0.49±0.43 D, 0.54±0.44 D, 0.50±0.43 D and 0.57±0.45 D, respectively. In long eyes MAE values were 0.51±0.45 D, 0.51±0.43 D, 0.51±0.43 D, 0.49±0.43 D and 0.57±0.54 D, respectively.

Conclusions:

The Haigis, Hoffer Q, SRK/T and Holladay 1 formulas gave more predictable refractive outcome than SRK II formula in all axial length groups.

Financial Disclosure:

None