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...

purpose: to report 3 cases of nocardia keratitis following photorefractive keratectomy (prk). report of outbreak: four eyes of 3 patients (2 female and one male) who had undergone prk by a single surgeon at a single center developed nocardia keartitis 3 to 6 weeks postoperatively. mean age was 25 (range 23-28) years and mean onset of corneal manifestations was 29 (range 21-40) days after prk. c...

PURPOSE To test the hypothesis that (1) there are quantitative differences in the cellular responses in the corneal stroma after photorefractive keratectomy (PRK) for low myopia compared to high myopia and (2) there are both qualitative and quantitative differences in the cellular responses in the corneal stroma after PRK for high myopia and laser in situ keratomileusis (LASIK) for high myopia....

PURPOSE We studied the long-term results of photorefractive keratectomy (PRK) in keratoconus suspects detected by videokeratography (TMS). METHODS Bilateral inferior corneal steepening was detected in 6 candidates for PRK presenting with moderate myopia or astigmatism. Mean follow-up was 44.5 +/- 4.4 months (range, 38 to 54 mo). Mean spherical equivalent refraction was -5.18 +/- 1.60 D (mean ...

PURPOSE To evaluate results of two surface excimer laser refractive surgery techniques--photorefractive keratectomy (PRK) and butterfly laser epithelial keratomileusis (butterfly LASEK). METHODS A prospective, randomized, double-masked study of 51 patients (102 eyes) who underwent laser refractive surgery. One eye of each patient was randomized to be operated with PRK and the fellow eye with ...

The aim was to assess the results achieved in keratoconic corneas submitted to the combined partial topography-guided photorefractive keratectomy (TG-PRK) and corneal cross linking (CXL) procedure performed on the same day. Four patients underwent this treatment of one eye. Corneal epithelium removal was performed by 50-micron phototherapeutic keratectomy. Then, partial TG-PRK laser treatment w...

PURPOSE To evaluate epithelial healing, postoperative pain, and best spectacle-corrected visual acuity (BSCVA) after transepithelial photorefractive keratectomy (PRK) performed with a new phototherapeutic keratectomy (PTK) mode using the NIDEK CXIII excimer laser. METHODS Fifteen eyes from 10 patients with myopia underwent transepithelial PRK using a multistage program to perform PTK followed...

AIM To compare 1-year follow-up results of photorefractive keratectomy (PRK) with mitomycin C (MMC) and laser in situ keratomileusis (LASIK) for custom correction of myopia. METHODS Eighty-eight eyes of 44 patients with moderate myopia were randomised to PRK with 0.002% MMC for 1 min in one eye and LASIK in the fellow eye. The 1-year follow-up was evaluated. RESULTS There were no difference...

purpose : to evaluate the effect of topical diclofenac sodium 0.1% on the corneal epithelial healing after photorefractive keratectomy (prk) methods : in this prospective randomized double blind clinical trial, prk was performed on 82 patients. thirty-three cases of them receiving topical diclofenac four times per day after surgical procedure and 45 patients did not receive this medication as a...