目的:评价准分子激光原位角膜磨镶术(laser in situ keratomileusis,LASIK)中应用Moria-M2角膜板层刀90刀头制作角膜瓣的安全性、可预测性及可重复性。方法:分别观察我院90刀头组制作角膜瓣500例1000眼及130刀头组制作角膜瓣510例1010眼,比较两种刀头制作角膜瓣术中角膜瓣形态、角膜瓣厚度、角膜瓣直径、角膜瓣蒂长及相关并发症。结果:90刀头组角膜瓣厚度为90～120(平均105.5±15.5)μm,130刀头组角膜瓣厚度为130～160(平均145±15)μm,差异有显著的统计学意义。两种刀头制作的角膜瓣,其角膜瓣直径、角膜瓣蒂长、弧度、角膜瓣形态及其他角膜瓣制作相关的并发症均无显著差异。结论:Moria-M2角膜板层刀90刀头制作角膜瓣具有良好的安全性、可预测性和可重复性,切削面洁净平整,操作及维护简单。

AIM:To evaluate the safety,efficiency and repeatability of using the Knife 90 of Moria-M2 to make corneal flap in LASIK.METHODS:Five hundred cases 1000 eyes were performed by Knife 90 and 510 cases 1010 eyes were performed by Knife 130,and the shape,thickness,diameter,pedice length and complication of the corneal flap were observed and compared by two different knives.RESULTS:The thickness of corneal flap with 90 heads was 90-120μm and the average was 105.5±15.5μ m,but the thickness of corneal flap with 130 heads was130-160μm and the average was 145±15μm.There was significantly statistical difference.There was no significantly statistical difference in corneal flap diameter,corneal flap pedicle length,curvature,shape and other complications with two different heads.CONCLUSION:It is very safe,efficient and repeatable to use the Knife 90 of Moria-M2 to make corneal flap,the surface of corneal flap are smooth and clean,and the Knife 90 is easy to operate and maintain.

R779.63