COMPARISON BETWEEN POSTOPERATIVE PAIN AND HEALING PATTERN AFTER CONVENTIONAL PHOTOREFRACTIVE KERATECTOMY (PRK) AND TRANS- EPITHELIAL PRK | ||
| ALEXMED ePosters | ||
| Article 1, Volume 6, Issue 4, September 2024, Pages 44-45 | ||
| Document Type: Preliminary preprint short reports of original research | ||
| DOI: 10.21608/alexpo.2024.331558.1982 | ||
| Authors | ||
| Mohamed Ashraf Saad Galal1; Mohamed Bahgat Goweida2; Amr Ahmed Said3; Nada Nagdy Saeed Ramadan Deghedy* 4 | ||
| 1Ophthalmology department, faculty of medicine, Alexandria University, Alexandria, Egypt | ||
| 2Ophthalmology Department, Faculty of Medicine- Alexandria University | ||
| 3Ophthalmology department Alexandria University | ||
| 4Department 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 | ||
| PRK; CONVENTIONAL PHOTOREFRACTIVE KERATECTOMY; TRANS- EPITHELIAL PRK | ||
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