LASIK矫正近视术后5a疗效观察

Evaluation of laser in situ keratomileusis for myopia at five years after surgery

目的 评价准分子激光原位角膜磨镶术矫正近视术后 5a的效果和安全性。方法 对接受准分子激光原位角膜磨镶术矫正近视术后 5a的患者 4 9例 89眼进行裸眼视力、屈光度和最佳矫正视力的随访 ,被随访眼按屈光度数分为 4组 :≤ - 6 .0 0D、- 6 .2 5～ - 10 .0 0D、- 10 .2 5～ - 15 .0 0D、≥- 15 .2 5D。结果 术后 5a各组的裸眼视力≥ 1.0分别为10 0 %、83%、4 9%和 4 % .与术后 6个月比较 ,术后 5a各组屈光度数回退≥ 1.0D分别为 0 %、17%、18%和 2 8% .最佳矫正视力≥ 1.0分别为 10 0 %、10 0 %、85 %和 5 6 % .术后最佳矫正视力不变或上升 1行分别为 86 %、79%、70 %和 2 0 % ,最佳矫正视力比术前上升 2行以上的分别为 14 %、13%、15 %和4 8% .结论 准分子激光原位角膜磨镶术治疗近视远期效果稳定 ,手术安全性好。

Objective To evaluate the effect and safety of laser in situ keratomileusis(LASIK) in treating myopia at 5 years after surgery. Methods LASIK was performed on 89 eyes of 49 patients who were followed up for five years. The patients were divided into four groups according to their degree of preoperative myopia according to diopter(≤-6.00D、-6.25～- 10.00D、-10.25～-15.00D、≥-15 25D).Results Five years after surgery,the uncorrected visual acuity (UCVA),the regressive degree compared with 6 months after surgery,the best co rrected visual acuity (BCVA) were reported.The percentage of UCVA ≥1 0 in each group was 100%,83%,49% and 4% respectively.Compared with 6 months after surgery ,the percentage of regressive degree ≥1.0D in each group was 0%,17%,18% and 28% .In each group,the percentage of BCVA ≥1.0 was 100%,100%,85% and 56% respective ly.Compared with preoperative BCVA, the percentage of BCVA remaining or gained one line was 86%, 79%, 70% and 20%, BCVA gained two lines or more in each group was 14%, 13%, 15% and 48%. Conclusion LASIK is an effective and safe method for reducing m yopia.