“…On the other hand, many previous studies have reported regression after PRK [8,9,13,14]. Many factors have been reported to play a role in myopic regression, such as epithelial hyperplasia, increasing corneal thickness, posterior corneal steepening because of corneal thinning, change in corneal biomechanics, increase in axial length, and lenticular sclerosis [18][19][20][21][22][23][24]. In our study, there was mild myopic regression in all cases.…”