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Toric intraocular lenses for astigmatism correction in cataract surgery

Session Details

Session Title: Toric IOL Outcomes

Session Date/Time: Monday 07/10/2013 | 16:30-18:30

Paper Time: 16:48

Venue: Auditorium (First Floor)

First Author: : J.Silva PORTUGAL

Co Author(s): :    A. Leal   M. Rego   J. Povoa   J. Mira   C. Lobo   J.

Abstract Details

Purpose:

Astigmatism affects a large number of patients that undergo cataract surgery. One of the options for correcting the astigmatism is a toric intraocular lens (IOL). Proper alignment and stability of the lens inside the capsular bag is a major factor influencing the efficacy of the astigmatism correction. The purpose of our study is to evaluate the efficacy and stability of the Acrysof ™ toric IOL (Alcon Labs, Fort Worth, TX) to correct preexisting astigmatism in patients undergoing cataract surgery.

Setting:

Department of Ophthalmology – Centro Hospitalar e Universitįrio de Coimbra

Methods:

Retrospective case series study, with 72 eyes of 65 patients. All patients underwent phacoemulsification and posterior chamber toric IOL implantation, without complications, from January through December 2011. Mean corneal astigmatism was between 2.01±0.41 diopters (D) (mean±sd). IOL selection was guided by the manufacturer online calculator (www.acrysoftoriccalculator.com). We collected both pre-operative data (visual acuity, corneal and refractive astigmatism) and the post-operative data [uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA), residual refractive cylinder, and toric IOL axis] at day 1, week 1, week 6, and one year after surgery.

Results:

At the end of the follow up period, the UCVA was 0.12(±0.65) logMAR; 93% of patients achieved ? +0.30 logMAR and 60% achieved ? +0.20 logMAR. The BCVA was +0.03(±0.85) logMAR; 86% of patients achieved ? 0.20 and 60% achieved ? 0.0 logMAR. The mean postoperative refractive astigmatism was 0,73±0,41 D. The axis rotation was less or equal than 5 degrees in 70 lenses (97%). Two lenses rotated between 6 and 10 degrees; no lens rotated more than 10 degrees.

Conclusions:

Our results indicate that phacoemulsification and posterior chamber implantation of Acrysof™ toric IOL is a largely predictable new surgical option to correct pre-existing corneal astigmatism in cataract surgery, yielding good visual acuity results. This intraocular lens is highly stable both on the short term and after at least one year of follow up.

Financial Interest:

NONE