BACKGROUND/AIMS Epithelial debridement for photorefractive keratectomy (PRK) is associated with pain, slower visual recovery, and may be aetiological in haze production. The aim of this study was to assess the clinical results of a new technique involving raising and replacing of an epithelial flap in photorefractive keratectomy. METHODS A prospective, non-randomised, comparative, paired eye ...

PURPOSE To quantify optical and biomechanical properties of the feline cornea before and after photorefractive keratectomy (PRK) and assess the relative contribution of different biological factors to refractive outcome. SETTING Department of Ophthalmology, University of Rochester, Rochester, New York, USA. METHODS Adult cats had 6.0 diopter (D) myopic or 4.0 D hyperopic PRK over 6.0 or 8.0...

many studies have shown the effectiveness of photorefractive keratectomy (prk) in correction of vision in low and moderate myopia. to evaluate the results of 193-nm exeimer laser photorefractive keratectomy for highly myopic eyes, we reviewed refractive outcome of 43 eyes of 30 patients. most eyes were treated with 1-step operation, using a 6 mm optical zone. 43 eyes were treated for myopia, wh...

PURPOSE To determine whether measurement of intraocular pressure (IOP) using a pneumatonometer is reliable after myopic 5 or 15 D excimer laser photoablation in rabbits. METHODS Ten rabbits underwent 5 D myopic photorefractive keratectomy (PRK) of the left eye. Another seven rabbits underwent 15 D PRK: The right eye served as a control. The diameter of each PRK was 5 mm. Rabbits were examined...

PURPOSE To evaluate the outcome of primary or retreatment photorefractive keratectomy (PRK) or phototherapeutic keratectomy (PTK) with mitomycin C (MMC) 0.02% applied prophylactically intraoperatively for the prevention of haze and regression in cases of significant haze and regression after primary PRK, due to previous radial keratotomy (RK), in primary PRK eyes with high myopia, and in comeas...

A 42-year-old man was admitted to our clinic complaining of visual distortion in his left eye two months after bilateral myopic photorefractive keratectomy (PRK). Macular optical coherence tomography (OCT) showed a stage II macular hole in the left eye. Simultaneous OCT in the right eye showed vitreous traction and distortion of the outer retina. One month later, the patient underwent vitrectom...

purpose : to report a case of bilateral dense ring-shaped marginal keratitis after photorefractive keratectomy (prk) case report : a 44-year-old man developed bilateral dense ring-shaped marginal keratitis after prk. the patient had moderate to severe meibomian gland dysfunction preoperatively that was treated incompletely. he was treated with mild topical antibiotics, topical and systemic ster...

PURPOSE To describe a case of choroidal neovascularization (CNV) following photorefractive keratectomy (PRK) to correct myopia. METHODS We performed PRK in both eyes of a 20-year-old girl to correct myopia. Refractive error was -4.75 -2.25 × 5 in the right eye and -5.00 -1.25 × 180 in the left eye. Metamorphopsia was noticed by the patient in the right eye one month after the surgical procedu...

Abstract Purpose To compare early clinical outcomes of single-step transepithelial photorefractive keratectomy (tPRK) and (PRK) regarding refractive outcome, visual acuity, wound healing, pain intensity recovery time.d. Methods In this prospective observational study 200 eyes 100 consecutive patients with mild to moderate myopia or without astigmatism were included. One hundred each either trea...

Steep central island (SCI) formation after photorefractive keratectomy (PRK) and laser in situ keratomileusis (LASIK) represents a major drawback in the visual rehabilitation of patients after refractive laser surgery. Because of the small size of SCIs, current ablation algorithms are unable to properly calculate an ablation pattern for customized retreatment. We present the use of a new ablati...