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Clinical outcomes comparison of unilateral versus bilateral diffractive multifocal intraocular lenses after cataract extraction

Poster Details

First Author: S.Akkaya Turhan TURKEY

Co Author(s):    E. Toker              

Abstract Details


To evaluate the visual outcomes and contrast sensitivity after unilateral implantation or bilateral implantation of a diffractive multifocal intraocular lens (IOL).


Marmara University, School of Medicine, Department of Ophthalmology, Istanbul, Turkey


The study enrolled 30 eyes of 20 patients. Uncorrected distance (UDVA), intermediate (UIVA), and near (UNVA) visual acuities; corrected distance visual acuity; distance-corrected intermediate and near visual acuities and contrast sensitivity measurements with and without glare were assessed before and one month after surgery.


The preoperative and postoperative data were comparable in the 2 groups. Ten participiants with a mean of age of 46ḟ6.25 years were in the bilateral multifocal group, ten participiants with a mean of age of 29.7ḟ6.25 years were in the multifocal-phakic group. There were not statistically significant postoperative differences in uncorrected near visual acuity (Bilateral group, 0.03ḟ0.06 (SD) logMar; unilateral group, 0.12ḟ0,2 (SD) logMar; p = 0.17). However, the bilateral group (0,17ḟ0,1) had significantly better UIVA than the unilateral group (0,34ḟ0,2) (p = 0.03). In all operated eyes uncorrected distance visual acuity was 20/20 for bilateral and unilateral group. Contrast sensitivity was similar between groups without glare (p > 0.05). However, bilateral group had a better contrast sensitivity with glare than unilateral group and it was statistically significant (p < 0.05).


In non-presbyopic patients with unilateral cataract, unilateral multifocal intraocular implantation is a good treatment option as it provides satisfactory visual outcome and spectacle independence.

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