Decentration and tilt: Silicone multifocal versus acrylic soft intraocular lenses

Purpose: To compare differences in decentration and tilt between a silicone multifocal and an acrylic intraocular lens (IOL) by evaluating postoperative changes. Setting: Department of Ophthalmology, College of Medicine, The Catholic University of Korea, Seoul, Korea. Methods: Forty eyes of 20 patients with IOL implantation were randomized into 2 groups according to IOL type: 3-piece silicone multifocal IOL or 3-piece acrylic IOL. All lenses were implanted in the capsular bag through a clear corneal incision after continuous curvilinear capsulorhexis and phacoemulsification. The amount of the decentration and the degree of the tilt of each IOL were measured using the EAS-1000 anterior eye segment analysis system 1 day and 1 and 2 months after surgery. Results: No significant difference in decentration and tilt was found among the 3 followups or between lens types. Conclusion: Neither IOL decentration nor tilt showed significant progression up to 2 months in eyes with a silicone multifocal or acrylic IOL when the IOLs were placed properly in the capsular bag. The amount of decentration and tilt was similar between lens types. J Cataract Refract Surg 2000; 26:582-585 (C) 2000 ASCRS and ESCRS.