PROSPECTIVE-STUDY OF THE SI-40NB FOLDABLE SILICONE INTRAOCULAR-LENS

Purpose: To evaluate the surgical performance and postoperative outcom es of 100 consecutive implantations of the new AMO PhacoFlex SI-40NB f oldable intraocular lens (IOL). Setting: Concord Hospital and Dalcross Private Hospital, Sydney, Australia. Methods: This prospective study comprised 100 consecutive patients who had endocapsular phacoemulsific ation cataract surgery with implantation of the AMO SI-40NB IOL, which has a silicone optic and poly(methyl methacrylate) (PMMA) haptics. Pa tients were excluded if trabeculectomy was performed concomitantly. Th e main outcome measures were control of folding, ease of implantation, centration, intraoperative and postoperative complications, and visua l acuity. A minimum of 4 months follow-up was planned. Results: Mean f ollow-up was 4.3 months +/- 2.1 (SD) (range 1 to 12 months). The lens permitted excellent control of folding and insertion, as well as excel lent centration at surgery and 4 months. There was one lens-related in traoperative complication because of crimping of the trailing lens hap tic. Postoperative complications were minimal, and 92% of patients ach ieved a visual acuity of 20/20 or better at 1 and 4 months, Excluding the eyes with retinal pathology, 100% achieved 20/20 or better at 4 mo nths. Conclusion: The AMO SI-40NB three-piece silicone IOL with PMMA h aptics provided excellent operative control, centration, and visual ou tcome and is suitable for small incision cataract surgery.