PRK治疗较高度数散光的疗效分析

Curative effect of photorefractive keratectomy on moderate and high astigmatism

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。

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:[WT5BZ]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.