准分子激光原位角膜磨镶术医源性散光探讨

Investigation of iatrogenic astigmatism after laser in situ keratomileusis

目的 :为准确分析准分子激光原位角膜磨镶术后散光 ,首次提出医源性散光的概念并进行分析 ,研究探讨预防治疗医源性散光的方法。方法 :对 72 4例、14 11眼实施准分子激光原位角膜磨镶术 ,统计术后医源性散光发生率 ,分析屈光度对医源性散光的影响。结果 :医源性不规则散光 12眼 (0 .85 % ) ,医源性规则散光 875眼 (6 2 .0 1% ) ,大于 0 .5D者 379眼 (2 6 .86 % ) ,症状明显 94眼 (6 .4 5 % ) ,表明屈光度对医源性散光影响明显。结论 :准分子激光原位角膜磨镶术后医源性散光发生率较高 ,影响因素较多 。

Objective:To analyze the astigmatism after laser in situ keratomileusis more accurately .The new astigmatism a completely new concept, i.e. iatrogenic astigmatism. The methods for preventing and treatment of iatrogenic astigmatism were investigated. Methods: LASIK was performed on 1411 eyes of 724 patients. The iatrogenic astigmatism rate was calculated. The influencing factor ammetropia degrees was analyzed. Results: Irregular iatrogenic astigmatism occurred on 12 eyes (0.85%), regular iatrogenic astigmatism on 875eyes (62.01%) among which 379 eyes (26.86%) greater than 0.5D. Obvious symptoms were noted on 91 eyes (6.45%). Statistics analysis showed that ammetropia degree influenced iatrogenic astigmatism. Conclusion: Iatrogenic astigmatism is common after LASIK with many influencing factors. Further study is needed aiming to find measures for prevention and treatment.