Ten-year Follow-up of Photorefractive Keratectomy for Myopia of Le Than −6 Diopter Original Reearch Article

Purpoe To evaluate the long-term outcome of excimer laer myopic photorefractive keratectomy (PRK) for myopia of le than −6 diopter (D). Deign Long-term (10-year) follow-up retropective, interventional cae erie. Method The tudy included 225 eye of 138 myopic patient with pherical equivalent (E) between 0 and −6 D treated with myopic PRK at the Intituto Oftalmológico de Alicante, Alicante, pain, uing the VIX 20/20 excimer laer (anta Clara, California, UA). The main outcome meaure were refractive predictability and tability, mean corneal keratometry, topographical cylinder, afety, efficacy, tability of viual acuity, and potoperative complication. Reult At 10 year, 169 (75%) of 225 eye were within ± 1.00 D and 207 (92%) were within ± 2.00 D. Ninety-five (42%) eye underwent retreatment becaue of overcorrection, regreion, or both. The mean E lightly decreaed (myopic regreion) with a mean magnitude of −0.10 ± 1.08 D over 10 year (−0.01 ± 0.11 D per year). Forty-one (58%) of 225 eye demontrated increae in bet pectacle-corrected viual acuity after 10 year. Only one eye lot eight line becaue of ignificant cataract, and two eye lot viion (one lot even line and the other lot four line) becaue of poterior egment-related complication. The mean corneal haze core gradually decreaed from 0.22 ± 0.39 at three month to 0.01 ± 0.09 at 10 year. Concluion Photorefractive keratectomy for myopia of le than −6 D i a afe and effective procedure in the long-term.