Transepithelial Photorefractive Keratectomy versus Conventional Photorefractive Keratectomy in treatment of Myopia and Compound Myopic Astigmatism (Comparative Study)

Abstract

Background: Lasik is one of the commonest refractive procedures. The occurrence of flap related complications; corneal ectasia and dry eye have increased the popularity of flapless laser vision correction and surface ablation techniques as (SMILE) and (PRK). Aim and objectives: To compare 3-month refractive results, predictability, safety, and efficacy of (TPRK) with (PRK) when used to correct myopia and compound myopic astigmatism. Subjects and methods: This prospective comparative interventional study was conducted at private centers under Benha University medical college staff supervision. From September 2018 to January 2022, forty patients (40 eyes) with contralateral eye control (40 eyes, total of 80 treatments) participated in this research. Stratified into two equal groups. Group 1: patients who underwent PRK with alcohol assisted epithelial debridement. Group 2: patients who underwent TPRK. Results: There was an increase of CET in both groups over the periods, but the most increase is in the PRK group after 1months.Increase mean value of CET in TPRK group after 3 months. The TPRK and PRK Groups were comparison in Pre CET with Post 1month and Post 3 months, there was a highly significant higher mean of post 1months and Post 3 months compared to Pre. There was an increase in the mean difference and change in PRK group compared to TPRK group according to change% of CET, while CET Pre-3m and CET 1m-3m insignificant difference between two groups. Conclusion: TPRK and PRK performed on regular corneas produce very similar results 3 months post procedure.