COMPARISON BETWEEN POSTOPERATIVE PAIN AND HEALING PATTERN AFTER CONVENTIONAL PHOTOREFRACTIVE KERATECTOMY (PRK) AND TRANS- EPITHELIAL PRK

Document Type : Preliminary preprint short reports of original research

Authors

1 Ophthalmology department, faculty of medicine, Alexandria University, Alexandria, Egypt

2 Ophthalmology Department, Faculty of Medicine- Alexandria University

3 Ophthalmology department Alexandria University

4 Department of Ophthalmology, Faculty of Medicine, Alexandria University

Abstract

Introduction
The refractive errors, where the optical system of the non-accommodating eye is unable to focus parallel light rays onto the fovea, which include myopia, hyperopia and astigmatism. Photorefractive keratectomy (PRK) was the initial surface ablation technique used to treat refractive errors, by targeting the anterior corneal stroma by the excimer laser, which causes stromal remodeling and an alteration in corneal refraction. Compared to other refractive procedures, PRK has a lower risk of complications such as corneal flap complications and epithelial ingrowth. Conventional PRK involves the removal of the corneal epithelium prior to the laser ablation, while trans-epithelial PRK uses the laser to remove the epithelium before the ablation. Conventional PRK has been shown to have a higher risk of pain and longer recovery time due to the removal of the corneal epithelium. . However, trans-epithelial PRK has been found to have a higher incidence of haze, which can lead to reduced visual acuity. Recent studies have shown that advanced surface ablation techniques, including the use of mitomycin C, can reduce the incidence of haze and improve visual outcomes with trans-epithelial PRK.

Keywords

ALEXMED ePosters
Volume 6, Issue 4
September 2024
Pages 44-45

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