Table of Contents
ISRN Ophthalmology
Volume 2011, Article ID 273923, 6 pages
http://dx.doi.org/10.5402/2011/273923
Clinical Study

Postoperative Refraction in the Second Eye Having Cataract Surgery

1Eye Clinic 112, Ophthalmology Section, Hunter Holmes McGuire VA Medical Center, 1201 Broad Rock Boulevard, Richmond, VA 23249, USA
2Department of Ophthalmology, Virginia Commonwealth University School of Medicine, P.O. Box 980438, 401 North 11th Street, Richmond, VA 23298, USA
3Cincinnati Eye Institute, Cincinnati, OH 45242, USA

Received 22 July 2011; Accepted 12 September 2011

Academic Editors: S. Rao, Y. F. Shih, and Á. Szél

Copyright © 2011 Christopher T. Leffler et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Introduction. Previous cataract surgery studies assumed that first-eye predicted and observed postoperative refractions are equally important for predicting second-eye postoperative refraction. Methods. In a retrospective analysis of 173 patients having bilateral sequential phacoemulsification, multivariable linear regression was used to predict the second-eye postoperative refraction based on refractions predicted by the SRK-T formula for both eyes, the first-eye postoperative refraction, and the difference in IOL selected between eyes. Results. The first-eye observed postoperative refraction was an independent predictor of the second eye postoperative refraction ( ๐‘ƒ < 0 . 0 0 1 ) and was weighted more heavily than the first-eye predicted refraction. Compared with the SRK-T formula, this model reduced the root-mean-squared (RMS) error of the predicted refraction by 11.3%. Conclusions. The first-eye postoperative refraction is an independent predictor of the second-eye postoperative refraction. The first-eye predicted refraction is less important. These findings may be due to interocular symmetry.