准分子激光角膜切削术治疗近视随访结果分析

DATA ANALYSIS OF 3 YEARS' FOLLOW UP AFTER EXCIMER LASER PHOTOREFRACTIVE KERATECTOMY FOR MYOPIA

目的 :探讨准分子激光角膜切削术 (PRK)治疗近视的安全性、有效性、稳定性。方法 :采用SummitOmnined型准分子激光仪治疗近视 10 389眼 ,随访 3年 177眼。术前屈光度 - 2 .0 0～ 9.0 0D ,平均 (-5.359± 2 .32 2 )D。随访内容有裸眼视力、屈光度、角膜曲率、角膜内皮镜及眼压、角膜地形图。结果 :术后裸眼视力≥ 0 .5和≥ 1.0 Ⅰ 组为 10 0 %、95.7% ,Ⅱ组为 97.1%、83.3% ,Ⅲ 组为 95.8%、6 5.4 %。术后 3年正视率Ⅰ组为 92 .5% ,Ⅱ组为 86 .3% ,Ⅲ组为 6 7.6 %。术后并发症多为一过性。结论 :PRK治疗近视安全。

Objective:To evaluate the effects of photorefractive keratectomy (PRK) for myopia. Methods:With Summit Omnied excimer laser PRK was performed on 10389 eyes with myopia of -2.00 to -9.00 diopters 〔mean,(-5.359±2.322)D〕and 177 eyes were followed up for at least 3 years. Observations were made on the percentages of uncorrected visual acuity (UCVA),refractive power, topogropy,opacification of cornea,IOP,endothelium and complications.Results:In the third year ,the percentage of UCVA above 0.5 and 1.0 were:GroupⅠ100% and 95.7%.Group Ⅱ 97.1% and 83.3% Group Ⅲ 95.8% and 65.4%. Those whose refractive outcome was within±1.00D: Group Ⅰ88.5%、Group Ⅱ 86.3%、 Group Ⅲ 67.6%.Conclusion:PRK is an effective and safe procedure for correcting myopia.