LASEK与PRK矫正近视及近视散光的疗效比较

目的 比较LASEK与PRK手术矫正不同程度近视及近视散光的有效性、安全性及稳定性。方法 70名患者(140眼)，分为中低度近视组39人(78眼)、高度近视组31人(62眼)。患者一眼行LASEK手术，对侧眼行PRK手术，术后观察术眼疼痛情况、上皮愈合时问、角膜上皮下雾状混浊(haze)、术后裸眼视力6个月。结果LASEK与PRK术后上皮愈合时间及术眼疼痛指数无明显差异；中低度近视组两种手术后裸眼视力无显著差异；高度近视组裸眼视力及角膜haze程度差异显著。结论 LASEK矫正不同程度近视均能取得较好的临床效果，术后裸眼视力及视力稳定程度优于PRK，特别表现在高度近视组。

Comparison of laser epithelial keratomileusis and photorefractive keratectomy for myopia and astigmatism

ObjectiveTo compare the effec ti veness,safety and stability of laser epithelial keratomileusis(LASEK) with those of conventional PRK for different degrees of myopia.MethodsSeventy patients with a manifest refraction of -2 25 to -9 75 diopter were treated and followed-up for 6 months.In each case,PRK was performed on 1 eye and LASEK for the opposite eye.Postoperative pain,epithelial healing time,manifest refract ion and corneal Haze were examined in PRK- and LASEK- treated eyes.Results During the follow-up period,there were no significant differences in epithelial healing time,postoperative pain scores and visual acuity between LASEK- and PR K-treated eyes in low to moderate myopia group,but significant different result s in postoperative visual acuity and corneal Haze in high myopia.ConclusionB etter postoperative acuity and stability are seen in LASEK group because of les s healing reaction.