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Retinal straylight measurements in patients with implanted bioanalogic polyfocal lens

Poster Details

First Author: K.Liehneova CZECH REPUBLIC

Co Author(s):    S. Ovesna   E. Adamusova   M. Hlozanek              

Abstract Details

Purpose:

This paper aims to compare intraocular light scattering in pseudophakic eyes of patients with implanted bioanalogic polyfocal lens and in healthy eyes of corresponding age. The main sources of retinal straylight are: corneal scatter, iris and sclera transparency, lens, and fundus scatter. The light scattering reduces the contrast of the retinal image, and consequently decreases the quality of image projected on the retina.

Setting:

1 Department of Ophthalmology, University Hospital Královské Vinohrady and 3rd Medical Faculty Prague, Czech Republic 2 GEMINI Eye Clinic Zlín, Czech Republic 3 Medicem Institute, Kamenne Zehrovice, Czech Republic

Methods:

Patients were measured by a straylight meter C-Quant (Oculus). All patients had binocularly implanted bioanalogic polyfocal lenses WIOL-CF (Medicem). This dataset was statistically analyzed using statistical software QC.Expert version 3.3 (TriloByte Statistical Software) aiming to compare pseudophakic and healthy eyes of corresponding age. WIOL-CF data were compared to recently published retinal straylight values in patients with monofocal and multifocal intraocular lens (IOL).

Results:

Twelve patients (24 eyes) from 2 centers in the Czech Republic were measured (age: 65±6 years). The retinal straylight in eyes implanted with WIOL-CF was statistically significantly better than healthy population standard of corresponding age (P<0.05). The mean value of retinal straylight in WIOL-CF eyes was 1.09±0.25. Recently published retinal straylight values in pseudophakic eyes implanted with monofocal and multifocal IOLs were 1.16±0.23 (age: 67±9 years) and 1.23±0.21 (age: 66±8 years), respectively. The difference in retinal straylight between eyes implanted with multifocal IOLs and polyfocal IOLs (WIOL-CF) was statistically significant (P<0.01).

Conclusions:

The study showed, that WIOL-CF had comparable results to monofocal IOLs and better results than multifocal IOLs in retinal straylight. If we supposed that four of five sources of straylight were identical in pseudophakic and phakic eyes, it could be concluded that the difference would lay mainly in the lens properties and consequently, the retinal straylight induced by WIOL-CF would correspond to the straylight induced by natural crystalline lens of lower age. This suggests that polyfocal WIOL-CF should be less susceptible to disturbing optical phenomena at low light under glare conditions than multifocal IOLs.

Financial Disclosure:

One or more of the authors research is funded, fully or partially, by a company producing, developing or supplying the product or procedure presented

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