Evaluation of Multifactorial Factors Contributing to The Myopic Regression after PRK.

Kim, So Youl; Kim, Man Soo

Original Article

Journal of the Korean Ophthalmological Society 1995;36(9):1439-1446.
Published online September 1, 1995.

Evaluation of Multifactorial Factors Contributing to The Myopic Regression after PRK.

So Youl Kim, Man Soo Kim

Department of Ophthalmology, St. Mary's Hospital, Catholic University, Medical College, Seoul, Korea.

엑시머 레이저 근시교정술 후의 근시로의 이행 원인에 관한 다각적 분석

김소열(So Youl Kim),김만수(Man Soo Kim)

Abstract

The thirty four patients(60 eyes) of the same age group, sex and refractive error receiving eximer laser photorefractive keratectomy(PRK) from April 2, 1991 to May 2, 1993 were studied to evaluate the possible factors influencing the myopic regression. In this study, we didn't find any difference between regressed and nonregressed group in the individual parameters such as IOP, keratometer, corneal thickness, occupation, surgeon, hyperopic peak after PRK, and topographic analysis preoperatively and postoperatively. But, the increased tendency of myopic regression one the another eye experiencmg myopic regression on one eye showed statistically significance(P=0.005) and the same tendency was applied on the corneal haziness(P=0.012). We suggest corneal haziness is likely related to causing the myopic regression following PRK. Therefore, the surgeon should particularily try to prevent myopic regression in patients experiencing myopic regression on his one eye by minimizing coneal haziness following PRK.

Key Words: Corneal haziness;Excimer laser photorefractive keratectomy;Myopic regression