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目的 :观察角膜瓣蒂部位于上方角膜的 L ASIK治疗不同屈光度近视的效果。方法 :利用准分子激光器联合微形角膜刀对 131例 (2 5 8眼 )进行治疗 ,按屈光度不同 (- 8.0 D以下 ,- 8.0～ - 15 .0 D,- 15 .0 D以上 )分为 3组。该刀前进轨道呈环形 ,切削角膜瓣后蒂部位于上方。术后 6月观察视功能、屈光度及并发症。结果 :术后 6个月裸眼视力 3组达到 0 .5以上分别为 97.8%、93.2 %、 5 5 .6 % ,达到 1.0以上分别为 88.8%、 80 .7%、 19.4%。术后 4～ 6月屈光度趋于稳定。手术并发症包括角膜上皮脱落、层间异物残留等。结论 :L ASIK对不同屈光度近视治疗均有良好效果 ,角膜瓣蒂部位于上方比位于鼻侧的术后并发症可能比较少发生
Objective: To observe the effect of LASIK with corneal flap pedicle on the upper cornea in different diopter myopic. Methods: Thirty-one patients (2858 eyes) were treated by excimer laser combined with micro-keratome and were divided into three groups according to different diopters (below -8.0 D, -80 to -15.0 D, -15.0 D) 3 groups. The knife forward track is annular, cutting corneal pedicle after the pedicle is located above. Visual function, refraction and complications were observed after 6 months. Results: The uncorrected visual acuity in the three groups reached more than 0.5 at 6 months after operation, which were 97.8%, 93.2% and 55.6%, respectively, reaching 88.8%, 80.7% and 19.4% respectively. Refraction after 4 to 6 months tend to be stable. Surgical complications include corneal epithelial shedding, residual layer of foreign body and so on. Conclusion: L ASIK has good effect on the treatment of myopia with different diopter. The postoperative complications of the pedicle of the corneal flap located on the upper side and located on the nasal side may be less likely to occur