Myopic Laser-Assisted Subepithelial Keratectomy (LASEK) outcomes using three different excimer laser platforms: a retrospective observational study

Abstract

BackgroundTo compare the visual and refractive outcomes after myopic LASEK using three different excimer lasers and standardized surgical and mitomycin C (MMC) application protocols.MethodsIn this retrospective, observational cohort study, we examined 122 eyes treated with Allegretto, 135 eyes treated with Esiris and 137 eyes treated with Technolas excimer lasers. All eyes were treated under the same surgical protocol, and a standardized MMC dosage was used. The three groups were refraction-matched, and both visual and refractive outcomes were evaluated at 1 and 7\u2009days and 1 and 3\u2009months after surgery.ResultsAt 3\u2009months postsurgery, Allegretto provided significantly better outcomes than Esiris and Technolas in terms of postoperative uncorrected distance visual acuity (UDVA) (1.11\u2009±\u20090.2 vs 1.01\u2009±\u20090.2 vs 0.98\u2009±\u20090.2) (P\u2009=\u20090.0001), corrected distance visual acuity (CDVA) (1.13\u2009±\u20090.2 vs 1.10\u2009±\u20090.1 vs 1.04\u2009±\u20090.2) (P\u2009=\u20090.0001), residual sphere (−\u20090.01\u2009±\u20090.2 vs +\u20090.29\u2009±\u20090.7 vs +\u20090.27\u2009±\u20090.6) (P\u2009=\u20090.0001), and efficacy index (0.99\u2009±\u20090.2 vs 0.90\u2009±\u20090.2 vs 0.91\u2009±\u20090.2) (P\u2009=\u20090.0004).ConclusionsWe found slightly better visual and refractive outcomes in the Allegretto group at 3 months post-op after LASEK with MMC to correct myopia.