Visual simulation of impact of change in corneal spherical aberration after hyperopic LASIK on the visual results obtained with different intraocular lenses

Poster Details

First Author: J.Ruiz-Alcocer SPAIN

Co Author(s):    D. Madrid Costa   C. P   L. Belda Salmer   R. Mont     

Abstract Details

Purpose:

To evaluate visual quality differences among intraocular lenses (IOLs) in patients with previous hyperopic laser ablations and to assess the impact of decentration and tilt of IOLs on visual quality.

Setting:

University of Valencia, Spain

Methods:

An adaptive optics visual simulator was used to simulate the wavefront aberration’s pattern of one aberration-correcting IOL (AcrySof IQ SN60WF®) and two spherical IOLs with different amount of positive spherical aberration (Akreos Adapt® and Triplato®) in five situations: centered, 0.2 mm and 0.4 mm of decentration, 2° and 4° of tilt, in two groups: with simulated low and high hyperopic laser corneal ablations (group A and B, respectively). Monocular distance visual acuity (VA) at 100%, 50% and 10% of contrast were measured.

Results:

Ten eyes were evaluated. When the IOLs were centered, all IOLs obtained comparable results for the group A, meanwhile for the group B the Akreos Adapt® and the Acrysof IQ SN60WF® showed better VA than the Triplato®. When the IOLs were misaligned, for group A the best VA results were obtained with the Akreos Adapt® and the most critical situation was at 0.4 mm of decentration. For the group B, misalignments decreased VA in a higher amount than for the group A.

Conclusions:

Our results suggest that the IOLs studied offer good visual quality when they are centered for both groups. However, tilt and decentration of monofocal IOLs have an important impact on visual function of patients with hyperopic ablations. For these patients, the Akreos Adapt® is the most robust to misalignments. FINANCIAL DISCLOSURE?: No