Abstract

目的 评价准分子激光原位角膜磨镶术(laser in situ keratomileusis,LASIK)和准分子激光角膜上皮下磨镶术(laser subepithelial keratomileusis,LASEK)对近视患者阅读能力的影响.方法 将40例患者(80眼)分成两组:LASIK组(23例)和LASEK组(17例),分别于手术前和术后第1个月测量单眼的最佳矫正远、近视力及在不同对比敏感度的阅读材料下的阅读速度.对所有数据进行配对资料Student t检验.结果 手术前后所有参数在两组间没有统计学差异.术前汉字阅读视力表7号字的平均阅读速度为(232.703±48.49)字/min(LASIK组)和(230.26±45.85)字/min(LASEK组),术后为(261.32±58.28)字/min(LASIK组)和(261.83±59.71)字/min(LASEK组),两组术后均有显著性提高(t=-4.075,P=0.000;t=-3.533,P=0.004).术前普通报纸的平均阅读速度为(260.97±38.69)字/min(LASIK组)和(268.23±28.97)字/min(LASEK组),术后为(238.52±58.40)字/min(LASIK组)和(249.75±41.56)字/min(LASEK组),LASIK组术后阅读速度有降低(t=2.417,P=0.023);而LASEK组术前术后阅读速度差异无显著性(t=1.692,P=0.116).结论 中、低度近视患者在这两种屈光手术后能够在光线充分的环境下保留正常的阅读能力。

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