Refractive surgery, both corneal and intraocular, has undergone an explosive evolution during the last 25 years. The first excimer laser surgery performed now already over 25 years ago is a historical landmark which started the scientific age of corneal refractive surgery. Before that momentous occasion, refractive surgery was a buccaneer procedure that lacked consistent scientific knowledge ab...

OBJECTIVE To compare mean healing times after debridement, debridement with grid keratotomy, and superficial keratectomy in cats with nonhealing corneal ulcers. DESIGN Retrospective study. ANIMALS 29 cats with 36 nonhealing corneal ulcers. PROCEDURE Medical records of cats with nonhealing corneal ulcers were reviewed. Signalment, duration of clinical signs, ophthalmic abnormalities, and r...

The aim of this study is to compare the efficacy and predictability of photorefractive keratectomy (PRK) and radial keratotomy (RK) in low myopia. This study consisted of 40 eyes of 24 patients that were divided into two groups. In group I, comprising 20 eyes, was performed excimer laser photorefractive keratectomy using the Summit excimer laser with a 6.0-mm diameter ablation zone. In group II...

OBJECTIVE To examine the long-term safety and efficacy of hyperopic automated lamellar keratoplasty (H-ALK) for correction of primary hyperopia and for consecutive hyperopia following overcorrected myopic refractive surgery. METHODS A prospective study was done on 67 eyes of 50 consecutive patients who underwent H-ALK between March 17, 1993, and August 18, 1995. Hyperopic automated lamellar k...

purpose: to report the results of different methods for true corneal power and intraocular lens (iol) power calculation in 10 eyes with previous radial keratotomy (rk) with or without astigmatic keratotomy. methods: in this case series including 10 eyes of 7 patients who had undergone rk with or without astigmatic keratotomy, we firstly determined corneal power using two methods: contact lens m...