Original Articles:
Contrast Sensitivity Comparison Between AcrySof ReSTOR and Acri.LISA Aspheric Intraocular Lenses

José F. Alfonso, MD, PhD; Cristina Puchades, MSc; Luis Fernández-Vega, MD, PhD; Carmen Merayo, OD and Robert Montés-Micó, PhD

PURPOSE

To evaluate distance contrast sensitivity under photopic, mesopic, and mesopic with glare conditions after implantation of the AcrySof ReSTOR (Alcon Laboratories Inc) and Acri.LISA (Carl Zeiss Meditec) intraocular lenses (IOLs).

METHODS

Binocular contrast sensitivity function was measured with the Optec 6500 FACT contrast sensitivity chart at distance and at three lighting conditions (85 cd/m² and 3 cd/m² with and without glare) in 36 eyes of 18 patients implanted with the AcrySof ReSTOR aspheric SN6AD3 IOL and 40 eyes of 20 patients implanted with the Acri.LISA 366D IOL. Results after implantation were compared between lenses at 1 and 6 months.

RESULTS

Our results revealed that both IOLs provided good best spectacle-corrected visual acuities at distance and near vision (~20/20), and no statistically significant differences were noted between models at different time points after surgery. Both IOLs provided contrast sensitivity within the normal range in photopic conditions. Under low lighting conditions, a reduction in contrast sensitivity for both lenses, particularly at higher spatial frequencies, was noted. No significant differences were observed between both IOLs at any lighting condition.

CONCLUSIONS

The AcrySof ReSTOR SN6AD3 and Acri.LISA aspheric IOLs provided contrast sensitivity within normal range under photopic conditions and a reduction in contrast sensitivity under mesopic conditions, with no significant differences between the two brands. [J Refract Surg. 2010;26(7):471-477.]

AUTHORS

From Instituto Oftalmológico Fernández-Vega, Oviedo (Alfonso, Fernández-Vega, Merayo); Surgery Department, School of Medicine, University of Oviedo (Alfonso, Fernández-Vega); and Optics Department, Faculty of Physics, University of Valencia (Puchades, Montés-Micó), Spain.

The authors have no proprietary interest in the materials presented herein.

Correspondence: José F. Alfonso, MD, PhD, Instituto Oftalmológico Fernández-Vega, Avda. Dres. Fernández-Vega 34, 33012 Oviedo, Spain. Tel: 34 985 245533; Fax: 34 985 233288; E-mail: j.alfonso@fernandez-vega.com

Received: October 26, 2008; Accepted: July 1, 2009

Posted online: August 3, 2009

doi:10.3928/1081597X-20090728-04