title: Postoperative refraction in the second eye having cataract surgery.
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 (P < 0.001) 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.
authors.affiliation: Eye Clinic 112, Ophthalmology Section, Hunter Holmes McGuire VA Medical Center, 1201 Broad Rock Boulevard, Richmond, VA 23249, USA ; Department of Ophthalmology, Virginia Commonwealth University School of Medicine, P.O. Box 980438, 401 North 11th Street, Richmond, VA 23298, USA.
authors.forename: Christopher T
authors.initials: CT
authors.lastname: Leffler
authors.affiliation: Eye Clinic 112, Ophthalmology Section, Hunter Holmes McGuire VA Medical Center, 1201 Broad Rock Boulevard, Richmond, VA 23249, USA ; Department of Ophthalmology, Virginia Commonwealth University School of Medicine, P.O. Box 980438, 401 North 11th Street, Richmond, VA 23298, USA ; Cincinnati Eye Institute, Cincinnati, OH 45242, USA.
authors.forename: Martin
authors.initials: M
authors.lastname: Wilkes
authors.affiliation: Eye Clinic 112, Ophthalmology Section, Hunter Holmes McGuire VA Medical Center, 1201 Broad Rock Boulevard, Richmond, VA 23249, USA ; Department of Ophthalmology, Virginia Commonwealth University School of Medicine, P.O. Box 980438, 401 North 11th Street, Richmond, VA 23298, USA.
authors.forename: Juliana
authors.initials: J
authors.lastname: Reeves
authors.affiliation: Eye Clinic 112, Ophthalmology Section, Hunter Holmes McGuire VA Medical Center, 1201 Broad Rock Boulevard, Richmond, VA 23249, USA ; Department of Ophthalmology, Virginia Commonwealth University School of Medicine, P.O. Box 980438, 401 North 11th Street, Richmond, VA 23298, USA.
authors.forename: Muneera A
authors.initials: MA
authors.lastname: Mahmood