Photorefractive Keratectomy (PRK) has been performed routinely since the 1990s for correction of myopia, hyperopia and astigmatism. It involves, removal of corneal surface epithelium and subsequent laser ablation using excimer laser.

Mar 31, 2016 · The safety and efficacy of laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) in correcting hyperopic astigmatism have been reported. 1 However, the efficacy of any corneal refractive surgery relies on refractive and keratometric stability.

Dec 6, 2013 · Photorefractive keratectomy (PRK) employs a 193-nm argon fluoride excimer laser to ablate the anterior corneal stroma to a new radius of curvature to decrease refractive error.

Transepithelial photorefractive keratectomy (Trans PRK) is a relatively new technology for refractive surgery and has shown promising results in myopia correction. The data on hyperopia correction by this method are limited. In this review, we have ...

Nov 8, 2024 · Photorefractive keratectomy (PRK) is a type of refractive surgery. This kind of surgery uses a laser to treat vision problems caused by refractive errors. You have a refractive error when your eye does not refract (bend) light properly. PRK is used to treat myopia (nearsightedness), hyperopia (farsightedness) and astigmatism.

Photorefractive keratectomy (PRK) was the first surface ablation procedure introduced for the treatment of refractive errors and has been proven to be effective and safe. In some cases, however, the patient may not be totally satisfied with the …

Mar 18, 2025 · To evaluate differences in clinical outcome, safety, and efficacy of photorefractive keratectomy (PRK) and laser-assisted in situ keratomileusis (LASIK) in the correction of hyperopic refractive errors. We have adhered to PRISMA criteria in this systematic review, which is registered with PROSPERO (CRD42023469543). Our search with studies comparing PRK and LASIK for hyperopia was conducted ...

Jun 13, 2012 · Hyperopia can be corrected with both non-surgical and surgical methods, among them photorefractive keratectomy (PRK) and laser assisted In situ keratomileusis (LASIK). There is uncertainty as to whether hyperopic-PRK or hyperopic-LASIK is the better method.

The safety and efficacy of laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) in correcting hyperopic astigmatism have been reported. 1 However, the efficacy of any corneal refractive surgery relies on refractive and keratometric stability.

Surface ablation procedures or photorefractive keratectomy (PRK) are practised commonly for the correction of refractive errors including myopia, astigmatism and hyperopia.