Abstract
Purpose::
Evaluate the visual acuity and contrast sensitivity of the AcrySof ReSTOR multifocal IOL and compare it with the monofocal SA60AT IOL.
Methods::
50 patients (100 eyes) were submitted to cataract exctraction and after phacoemulsification the ReSTOR multifocal IOL was implanted in the capsular bag. Inclusion criteria were corneal astigmatism < 1.5 D, myopia < 6D, and no associated ocular disease. Complete ophthalmological examination, including uncorrected visual acuity, best-spectacle corrected visual acuity, contrast sensitivity (Metrovision Clermont Ferrand) was performed 60 days postoperatively. Results were compared with those obtained from 10 patients (20 eyes) implanted with AcrySof monofocal IOL single piece design and material as used in the AcrySof ReSTOR IOL.
Results::
In the multifocal group 86 eyes (86%) distance uncorrected visual acuity was 20/20 or better (logMAR < 0.04) and near uncorrected visual acuity at the standard distance of 33 cm was 20/25 or better (logMAR 0.14). Distance uncorrected and best corrected visual acuity in the ReSTOR group were not statistically different from the monofocal group, but near uncorrected visual acuity was statistically better in the multifocal group. 98% of the patients with ReSTOR achieved total spectacle indipendence. Contrast sensitivity was reduced in the multifocal group compared with monofocal group. 9% of the patients in the multifocal group reported halos and glare.
Conclusions::
The AcrySof ReSTOR IOL provides a satisfactory full range of vision and achieves a high percentage of spectacle indipendence, when compared with the SA60AT monofocal IOL, but with lower contrast sensitivity.
Keywords: cataract • intraocular lens • contrast sensitivity