PMID: 9544633Apr 17, 1998Paper

Corneal topography of photorefractive keratectomy versus laser in situ keratomileusis. Summit PRK-LASIK Study Group

Ophthalmology
P S HershR Irani

Abstract

This study aimed to compare qualitative patterns of corneal topography early in the postoperative course after excimer laser photorefractive keratectomy (PRK) and laser in situ keratomileusis (LASIK) when used for the treatment of myopia of 6.0 to 15.0 diopters. The study design was a prospective, multicenter, randomized clinical trial. A total of 64 eyes were treated with PRK and 54 eyes were treated with LASIK. Using the Summit Apex excimer laser, patients received either PRK or LASIK using a single pass, multizone excimer laser ablation. Computer-assisted videokeratography was performed at designated postoperative examinations. Videokeratography maps at 1 and 3 months after surgery were classified using a standard classification scheme. The association of topography patterns to loss of spectacle-corrected visual acuity was tested. At 1 month, for the PRK (n = 60) and LASIK (n = 51) groups, respectively, 63.3% and 19.6% of eyes fell into one of the four optically irregular groups (central island, keyhole, semicircular, or irregularly irregular; P < 0.001). At 3 months, for the PRK (n = 49) and LASIK (n = 39) groups, respectively, 36.7% and 10.3% of eyes fell into one of the optically irregular groups (P = 0.004). Comparing th...Continue Reading

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Citations

Apr 26, 2001·Ophthalmology·U L AbbasUNKNOWN Summit PRK Study Group
Aug 8, 2001·Journal of Cataract and Refractive Surgery·M MrochenW Hütz
Apr 26, 2002·Journal of Cataract and Refractive Surgery·Susan H YangJay S Pepose
Sep 17, 2002·Journal of Cataract and Refractive Surgery·François DestrempesGuy Doyon
Nov 30, 2002·Journal of Cataract and Refractive Surgery·Peter S HershKristen Fry
Dec 12, 2001·Journal of Cataract and Refractive Surgery·E HaugeW N Charman
Apr 20, 2000·Journal of Cataract and Refractive Surgery·S W KangW J Kim
Oct 6, 2000·Journal of Cataract and Refractive Surgery·J D Lumba, P S Hersh
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