Biometry of 3 types of intraocular lenses using Scheimpflug photography

Abstract

Purpose To compare differences in intraocular lens (IOL) decentration and tilt and anterior chamber depth (ACD) using Scheimpflug photography as well as best corrected visual acuity (BCVA) in eyes having phacoemulsification with implantation of 1 of 3 types of IOLs. Setting Chung-Ang University Hospital, Seoul, Korea. Methods This study comprised 137 cataractous eyes of 108 patients having phacoemulsification and IOL implantation. Eyes were randomized into 3 groups based on IOL type: poly(methyl methacrylate) (PMMA) (n = 65); silicone (n = 47); soft acrylic (n = 25). Biometric analysis was performed with an EAS-1000 Scheimpflug camera 1, 3, and 6 months after surgery. Best corrected visual acuity was also measured at these visits. Results The anterior chamber was deeper 1 month after surgery, with no statistical difference among groups. There were no significant differences among groups in IOL decentration and tilt or final BCVA during the follow-up. Conclusions In this study in which a properly constructed continuous curvilinear capsulorhexis was created and IOLs were accurately placed in normal capsular bags, changes in ACD, IOL decentration and tilt, and BCVA were similar in eyes with a PMMA, silicone, or soft acrylic IOL.