Comparison of two multifocal intraocular lenses regarding uncorrected reading ability under different lighting and contrast conditions

Session Details

Session Title: Multifocal Toric IOLs

Session Date/Time: Tuesday 16/09/2014 | 14:00-16:00

Paper Time: 15:10

Venue: Boulevard A

First Author: : G.Jell AUSTRIA

Co Author(s): :    C. Strohmaier   G. Grabner   A. Dexl        

Abstract Details

Purpose:

The aim of the study was to compare the uncorrected bilateral reading ability after bilateral implantation of the multifocal lenses IQ ReSTOR SN6AD1 +3.0D (Alcon Laboratories, Inc., Fort Worth, TX, USA) or Diffractiva-aA +3.5D (Human Optics, Erlangen, Germany) under different lighting and contrast conditions.

Setting:

Paracelsus Medical University, Dept. of Ophthalmology, Salzburg, Austria

Methods:

40 patients were assigned to two randomized groups of 20 patients each, which received either the ReSTOR or Diffractiva aA lens. After simultaneous bilateral cataract surgery, patients were examined at 1 day and 1 and 3 months postoperatively. Examinations included a standardized assessment of the reading ability with the Salzburg Reading Desk (SRDVision LLC, NY, USA) under different lighting and contrast conditions (95% contrast/100cd•mˉ² luminance and 30% contrast/20 cd•mˉ² luminance)

Results:

The uncorrected reading ability [logMAR] showed no statistically significant differences neither under optimal (1 month: 0.14±0.12 vs. 0.15±0.12; 3 months: 0.18±0.13 vs. 0.20±0.14, p= 0.78) nor under reduced lighting and contrast conditions (1 month: 0.32±0.14 vs. 0.32±0.12; 3 months: 0.37±0.15 vs. 0.37±0.15, p= 0.85). The well known influence of lighting and contrast on the performance of multifocal lenses in general was observed in the data set.

Conclusions:

The Diffractiva aA multifocal lens yields an equal postoperative performance to the widely used ReSTOR concerning the uncorrected reading ability of patients under different lighting and contrast conditions.

Financial Interest:

NONE