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

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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


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.


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


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)


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.


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.

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