Photorefractive keratectomy for myopia from 6.00 D to 10.00 D

Surgical correction of mild and high myopia using excimer laser photorefractive keratectomy (PRK) remains controversial. We present a retrospective study of 40 consecutive PRK procedures performed to reduce myopia ranging from -6.00 D to -10.00 D. Postoperative follow up was 24 months. The mean preoperative spheroequivalent refraction was -8.12 +/- 1.52 D; postoperatively it was -2.31 +/- 1.25 D. In 26 of 40 eyes (65%) we observed a regression of the refraction effect after 6 months. In 85% of eyes a persistent corneal haze (+1 grading) was observed at the end of follow up. Photorefractive keratectomy to correct or reduce mild or high myopia is simple and safe but had poor predictability and significant refractive regression in this series.