摘要目的 比较准分子激光上皮瓣下角膜磨镶术(LASEK)和准分子角膜原位磨镶术(LASIK)在矫治屈光回退再治疗的安全性,有效性和可预测性.方法 回顾性分析8例12只眼LASEK(A组)和15例23只眼LASIK(B组)在术后屈光回退,欠矫再次手术病例.A组采用酒精浸泡保留上皮瓣的方法;B组采用原瓣掀起或再次重新制瓣的方法.结果 术后1月A组眼视力≥0.8者9只眼(占75%),B组≥0.8者2只眼(87%),等效球镜屈光度+1.0～-1.25D之间.B组有一例重新制瓣时出现角膜瓣错位,第三次手术行LASEK裸眼视力达到1.0.结论 LASEK和LASIK在术后屈光回退,欠矫再治疗是安全有效的.两种手术方法在远期疗效和术后并发症等仍需更长期的观察.

abstractsObjective To compare the effectiveness and difference between LASEK and LASIK for the retreatment of the regression and undercorrection after LASIK, PRK and RK.Methods Twelve cases of post-LASEK and 15 cases of post-LASIK that underwent retreatment were retrospectively analyzed.LASEK was that the epithelium was scraped and saved with 20%alcohol,and LASIK was that the original flap-lift method was applied.Results After retreatmeat,visual acuizties in LASEK cases were 0.8% in 75%,in LASIK cases were 0.8 in 87%,the spherical power after retreatment Was between +1.0-1.25D,1 eye treated thirdly in LASIK group.Conclusions For the undercorrection and regression,LASEK and LASIK are both safe and efficacious.LASIK iS more stable,no early pain,and no significant corneal stromal reactions than LASEK.LASEK is feasible choice for undercorrection and regression in thin cornea,the abnormal flap,and high myopia.However a long follow up period is process for continuing evaluation about farther effectives and complications.