论文部分内容阅读
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, predictability and refractive stability of residual myopia after excimer laser re-keratotomy. Methods Remaining myopic changes after laser surgery were retrospectively analyzed. The average follow-up time was 14.17 months ± 5.37 months (range, 6 to 24 months). The clinical effects were retrospectively analyzed. Results The average equivalent spherical scope of the residual myopia in 58 myopic eyes before PRK was -5.35 ± 2.89D (-0.75 ~ -14.0 0D), and the final average equivalent spherical scope was -0 .15 D ± 0.94D) (+0 .75 ~ -2.27 D); 44 eyes (75.86%) the final refraction was within ± 1.0 0 D of the number of pre-correction, and again PRK postoperative uncorrected visual acuity UCVA was 0.71 ± 0.33, of which UCVA≥0.6 in 54 eyes (93.10%) and BCVA loss ≥1 in 3 eyes (5.17%); corneal haze≥0 Sixteen eyes of grade .5 (2 7.5 9%). Conclusion Excimer laser re-keratotomy for the treatment of residual myopia has good safety, predictability and refractive stability.