ENDOTHELIAL STUDY OF IRIS-CLAW PHAKIC LENS - 4 YEAR FOLLOW-UP

Purpose: To study quantitative and morphometric endothelial changes in phakic eyes implanted with the Worst iris-claw lens to correct high m yopia. Setting: Department of Ophthalmology, University Hospital ''La Fe'', Valencia, Spain. Material and Methods: This retrospective study involved 111 phakic eyes (73 patients) implanted with the Worst iris-c law lens. Noncontact specular microscopy and computer-assisted analysi s was performed preoperatively and 6 months and,1, 2, 3, and 4 years p ostoperatively. Results: The mean cell loss was 3.85% at 6 months, 6.5 9% at 1 year, 9.22% at 1 2 years, 11.68% at 3 years, and 13.42% at 4 y ears. At 2 years, the hexagonality 1 and coefficient variation in cell size were close to the preoperative levels. No major complications we re seen; early postoperative corneal touch required intraocular lens ( IOL) removal in 1 case (0.9%). Four eyes (3.6%) needed a reoperation b ecause of poor IOL fixation (2 eyes), traumatic subluxation of the IOL (1 eye), and miscalculation of the IOL power (1 eye). Conclusions; Alt hough there was a slight, progressive cell loss after IOL implantation , the morphometric changes recovered and were close to the preoperativ e :levels. This suggests that endothelial damage occurred primarily du ring the surgical procedure.