角膜瓣蒂在上方的LASIK治疗近视

LASIK with superior stalk of corneal cap for myopia

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 。

Objective: To observe the effect of laser in situ keratomileusis (LASIK) with superior stalk of corneal cap for the correction of myopia. Methods: With the Microlamellar Keratoplasty (MLK) and the excimer laser, LASIK was performed on 131 cases (258eyes). According to the preoperative refraction, the patients were divided into 3 groups: < -8.00D, - 8.00D ~ - 15.00D and > -15.00D. The advanced rails of MLK were ring and the stalk of corneal cap was on the superior cornea. All the patients had been followed up for 6 months on visual acuity, refractive status and complication. Results: The rates of uncorrected visual acuity at 0. 5 or better in 3 groups were 97.8%, 93.2% and 55.6%, the visual acuity at 0. 5 or better were 88.8%, 80.7% and 19.4%. The refractive status tended to be stable about 4 ~ 6 months after operation. The complications of operation included corneal epithelial excoriation, interracial foreign bodies, etc. Conclusion: The postoperative complications of the superior stalk of corneal cap might be less than that at the nasal side of corner.