【摘要】 目的:探讨准分子激光原位角膜磨镶术治疗近视后角膜地形图的变化,并对其疗效、安全性和术后并发症等方面进行观察。方法:对60例(112眼)近视眼患者行准分子激光原位角膜磨镶术(LASIK),按屈光度将所有病例分为3组,Ⅰ组:-1.45～-6.20D(34眼),Ⅱ组:-6.45～-10.20D(53眼),Ⅲ组:-10.45～-14.00D(25眼)。检查术前和术后1wk;1,3及6mo的视力(裸眼视力和矫正视力)、屈光度、角膜地形图的改变。结果:模拟角膜计度数(simk)较术前降低,术后1wk角膜地形图平滑形占83%,其它形占17%,无中央小岛形成,切削形态随时间延长逐渐变规则。术后3mo裸眼视力≥1.0的各组分布比率是100%、96%、92%,屈光度在3mo术后基本稳定,术后并发症少。结论:LASIK手术是治疗近视的一种安全、有效且可预测性好的手术方法,角膜地形图可帮助我们详细了解角膜表面的形状,预测手术效果。更多还原

【Abstract】 AIM:To study the changes of corneal topography and to analyze the clinical effects after LASIK for myopia. · METHODS: According to the preoperative diopters of the myopia the patients were divided into three groups: group Ⅰ: -1.45--6.20D (34 eyes), group Ⅱ:-6.45--10.20D (53 eyes) ,group Ⅲ:-10.45--14.00D (25 eyes). They were examined with eyesight, diopter and corneal topography preoperatively and 1wk; 1,3 and 6mo postoperatively. · RESULTS: Simk decreased after surgery. The percent of bomogeneous pattern was 83% at 1wk after LASIK and the bomogeneous pattern became more regular gradually. The percentage of uncorrected visual acuity equal to or more than 1.0 were 100%, 96% and 92% respectively in the three months after LASIK. The spherical equivalent was stable at 3mo after LASIK. · CONCLUSION: LASIK is a safe, effective and predictable method for treatment of myopia. We can find out the figure of corneal and parameter concerned with diopter by corneal topography, and then forecast the surgery results.更多还原