Comparison of Refractive Error and Progression of after-cataract Depending on the Angulation of Intraocular Lens

ABSTRACT

PURPOSE: Intraocular lens with angulation seemed to prevent the development of posterior capsular opacification. We studied whether this angulation could inhibit capsular opacity following in the bag implantation of posterior chamber lens. METHODS: One hundred fifty eight eyes of 140 patients with normal axial lengths (range 22.0~26.0 mm) were included. The difference between the preoperative goal diopter and actual postoperative diopter was measured. Eyes were divided into 5 groups according to the type of intraocular lens. In order to determine the effect of angulation on capsular opacity, the time period until YAG laser capsulotomy was compared between the angled and plano intraocular lenses. RESULTS: No significant difference was seen in the goal diopters among all groups during the entire follow-up period from 1 day to 6 months. The number of YAG laser capsulotomy was significantly less and the period until YAG laser capsulotomy was significantly longer in the group using the intraocular lens with 10 degrees angulation (Soflex R , Chiron C31UB) than in the group using the intraocular lens without angulation (STAAR AQ2003V). CONCLUSIONS: The results of the present study showed that it would be beneficial to use an angulated IOL for the suppression of capsular opacity. A high goal diopter could be obtained without changing the refractory power when using angulated IOL.