PRK治疗较高度数散光的疗效分析

目的 :分析准分子激光屈光性削术 ( PRK)治疗较高度数散光的疗效。方法 :应用日本 NIDEK EC-50 0 0型准分子激光治疗系统 ,对散光度数≥ - 2 .0 D的 73眼行 PRK治疗。按散光度数分为二组 : 组 - 2 D≤散光<- 3D, 组 - 3D≤散光≤≤ - 4 .5D。观察分析术后视力。结果 :术后 、 组平均裸眼视力分别为 1.0 36± 0 .2 76,1.0 0 6± 0 .2 39,术后 、 组裸眼视力≥BCVA者分别为 85.2 % ,10 0 % ;≥ 1.0者分别为 74 % ,68.4 % ;≥ 0 .8者分别为 88.9% ,89.5%。结论 :PRK治疗较高度数散光的疗效确切 ,预测性强。

Curative effect of photorefractive keratectomy on moderate and high astigmatism

Objective：To evaluate the curative effect of photorefractive keratectomy（PRK）on moderate and highter myopic astigmatism．Methods：PRK was performed on 73 cases of astigmatism≥2．0 D with Japanese NIDEK EC-5000 Model excimer laser instrument．These caseds were divided into two groups according to the diopters of astigmatism：①range from 2 D to 3 D；from 3 D to 4．5 D．The post-operative visual acuity was observed．Results：After operation，the average uncorrected visual acuity for group（1）and （2）was 1．036±0．276 and 1．006±0．239，respectively，the uncorrected visual acuity≥BCVA for groups（1） and （2）was 85．2％ and 100％，respectively；≥1．0 was 74％ and 68．4％ respectively，and≥0．8 was 88．9％ and 89．5％，respectively．Conclusion：For moderate and higher astigmatism，PRK provides better accuracy and predication．