Transepithelial photorefractive keratectomy: a prospective randomized comparative study between the two-step and the single-step techniques.

ABSTRACT:

Objectives

To assess and compare the six-month outcome of the two-step transepithelial phototherapeutic keratectomy- photorefractive keratectomy (PTK-PRK) and the single-step transepithelial PRK for myopia and myopic astigmatism.

Methods

A prospective randomized study. The study enrolled 100 eyes of 50 patients with mild to moderate myopia or myopic astigmatism stratified into two groups, PTK-PRK (n = 50 eyes) and single step PRK (n = 50 eyes). Primary outcome measures were visual acuity and manifest refraction. Secondary outcome measures were epithelial healing duration, post-PRK pain scores and 3-month postoperative haze grading.

Results

Preoperative characteristics were similar in both groups (p value > 0.05). The mean uncorrected distance visual acuity (UDVA) at 1

SUBMITTER: Abdel-Radi M 

PROVIDER: S-EPMC10219954 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature