Posters

First-generation vs second-generation toric calculator for toric IOL implantations

Poster Details

First Author: V.Webers NETHERLANDS

Co Author(s):    N. Bauer   N. Visser   T. Berendschot   I. Saelens   H. Beckers   R. Nuijts     

Abstract Details

Purpose:

To compare the accuracy of predicted postoperative residual refractive astigmatism after toric IOL implantation between a first generation and a second generation toric calculator

Setting:

University Eye Clinic Maastricht

Methods:

A total of 458 eyes underwent cataract extraction and implantation of a toric IOL between 2011 and 2017. A first generation toric calculator (Acrysof Toric Calculator) was used in 323 eyes, whereas a second generation toric calculator (Barrett Toric Calculator) was used in 135 eyes. The primary outcome was to compare the amount of over- and undercorrection, using vector analysis.

Results:

A significant better uncorrected visual acuity was seen in the Barrett group compared to the Acrysof group (respectively 0.05±0.12 vs. 0.12±0.17 logMar). Vector analyses showed a significantly lower percentage of overcorrection of  ≤0.5D or ≤1.0D in the Barrett group (respectively 14% and 3%) compared to the Acrysof group (respectively 32% and 8%). A significant higher percentage of undercorrection of ≤0.5D was seen in the Barrett group compared to the Acrysof group (respectively 7% and 2%). The correction index was significantly closer to the ideal 1.00 in the Barret group (1.06±0.24) compared to the Acrysof group (1.16±0.24).

Conclusions:

The use of a second generation toric calculator significantly reduces overcorrection after toric IOL implantation

Financial Disclosure:

None