Iris-fixated intraocular lens implantation to correct moderate to high myopia in Asian-Indian eyes: Five-year results

Abstract

To evaluate the efficacy, safety, predictability, and stability of iris-fixated phakic intraocular lenses (pIOLs) to correct high myopia in an Asian-Indian population. Tertiary eyecare center. Interventional case series. Eyes with myopia from -5.5 to -24.0 diopters (D) had pIOL implantation and were examined postoperatively at 1 day, 1 week, 1, 3, and 6 months, and yearly for 5 years. Parameters evaluated were postoperative uncorrected (UDVA) and corrected (CDVA) distance visual acuities, predictability, efficacy, stability of mean spherical equivalent (SE), and endothelial cell loss. The study enrolled 85 eyes (44 patients). The mean CDVA improved from 6/10 preoperatively to 6/7 postoperatively and the mean UDVA, from 6/319 to 6/9. Postoperatively, the mean SE was -0.63 ± 0.55 D. Of the 51 eyes completing a 4-year follow-up; 19 (37.3%) had a mean SE of 0.50 D or less and 37 (72.5%) had a mean SE of 1.00 D or less. The CDVA improved 1 line or more in 35 eyes (68.6%); 14 eyes (27.5%) had postoperative CDVA similar to the preoperative CDVA. At 4years, the safety index was 1.46 and the efficacy index, 0.96. Thirty-six eyes (70.6%) had a postoperative UDVA better than the preoperative CDVA. The mean endothelial cell loss at 1, 3, 6, 12, 24, 36, and 48 months was 4.3%, 5.7%, 7.1%, 7.6%, 8.7%, 9.2%, 11.07%, and 12.4% respectively. Twenty eyes (23.5%) had reenclavation for spontaneous or traumatic disenclavation. Postsurgical refractive outcomes of iris-fixated pIOL implantation for myopia were fairly predictable and stable in an Asian-Indian population. No author has a financial or proprietary interest in any material or method mentioned.