准分子激光再次角膜切削术治疗残余近视  

Excimer laser retreatment of residual myopia after previous photorefractive keratectomy

作　　者：沈政伟[1] 马群[1] 尹禾[1] 黄震唏[1] 李丽[1] 吴金桃[1] 

机构地区：[1]广州军区武汉总医院眼科,湖北省武汉市430070

出　　处：《眼科新进展》2000年第2期134-135,共2页Recent Advances in Ophthalmology

摘　　要：目的　评价准分子激光再次角膜切削术治疗 PRK术后残余近视的安全性、可预测性及屈光稳定性。方法　对 5 8眼准分子激光屈光性角膜切削术后残余近视进行再次激光治疗 ,术后平均随访 14.17mo± 5 .37m o(6～ 2 4mo) ,对临床疗效进行回顾性分析。结果　 5 8眼残余近视再次 PRK术前平均等值球镜度为 - 5 .35 D± 2 .89D(- 0 .75～ - 14.0 0 D) ,术后最终平均等值球镜度为 - 0 .15 D± 0 .94D) (+0 .75～ - 2 .75 D) ;44眼 (75 .86 % )最后屈光度稳定在预矫度数的± 1.0 0 D以内 ,再次 PRK术后裸眼视力 (U CVA)为 0 .71± 0 .33,其中 5 4眼(93.10 % ) UCVA≥ 0 .6 ;3眼 (5 .17% )最佳矫正视力 (BCVA)损失≥ 1行 ;角膜 haze≥ 0 .5级的 16眼 (2 7.5 9% )。结论　准分子激光再次角膜切削术治疗残余近视具有较好的安全性、可预测性及屈光稳定性。Objective To evaluate the safety,predicatablility and stability of the retreatment of residual myopia after previous photorefractive keratectomy. Methods A retrospective analysis was performed on the records of 58 eyes who had undergone retreatment with the laser for residual myopia after a previous PRK. Mean follow up was 14.17±5.37 months (6～24months). Results The mean spherical equivalent(MSE)before retreatment was -5.35±2.89 diopter(D)(-0.75～-14.00D).The final MSE after reablation was -0.15±0.94(+0.75～-2.75D).Of the 58 eyes,44 eyes(75.86%)obtained a final refraction within 1.00D of emmetropia and the uncorrected visual acuity after retreatment was 0.71±0.33,54 eys(93.10%) achieved an unaided visual acuity of 0.6 or better.Conclusions Excimer laser retreatment may provide a relatively safe and predictable method for correcting residual myopia after an earlier PRK with good power stability.

关 键 词：残余近视 准分子激光 角膜切削术 PRK 

分 类 号：R778.110.5[医药卫生—眼科] R779.63[医药卫生—临床医学]