二次准分子激光原位角膜磨镶术治疗残余近视疗效分析

Laser in situ Keratomileusis Retreatment for Residual Myopia

目的 评价二次准分子激光原位角膜磨镶术 (LASIK)治疗残余近视疗效及安全性。方法 用Keracor116型准分子激光机对 2 2例 3 5眼LASIK术后残余近视的病人行二次LASIK手术 ,两次手术间隔 3～ 2 0个月。术后平均随访 12个月。采用配对t检验对数据进行统计学处理。结果 二次LASIK术后平均裸眼视力较术前显著提高 (P <0 0 0 1) ,UCVA与术前最佳矫正视力比较 ,差异无显著意义 (P >0 0 5 ) ;术后近视屈光度均在± 1 0 0D以内。无危及视力的并发症出现。结论 二次LASIK治疗残余近视安全。

Objective To evaluate the effect and safety of LASIK retreatment for correcting residual myopia and astigmatism. Methods The thirty-five eyes (from 22 patients) underwent secondary LASIK by model Keracor 116 excimer laser at 3-20 months after primary LASIK procedure. Following-up was 12 months. The statistical analysis of the data was made by the paired-samples t test. Results After retreatment, uncorrected visual acuity (UCVA) improved significant (P<0.001), UCVA after secondary LASIK and best-corrected visual acuity (BCVA) after primary LASIK were with no significant difference (P>0.05). Myopic refraction of all patients was within ±1.00D. Severe complications were not observed. Conclusions Secondary LASIK was an effective and safe method to treat regression after primary LASIK for high myopia.