目的:探讨近视患者LASIK术后发生夜间眩光的术前相关因素。方法:将665例(1257眼)近视患者按屈光度分为两组:组Ⅰ(低、中度近视)-1.00～-6.00D;组Ⅱ(高度近视)-6.25～-14.25D。以ObscanⅡ眼前节分析系统测量术前暗光下瞳孔直径,所有手术均为标准的LASIK手术,术后3mo调查患者夜间眩光情况。结果:低、中度近视组术前暗光下瞳孔直径6.81±0.50mm,高度近视组6.98±0.57mm,两组差异有显著性(P=0.001)。低、中度近视组58眼(7.9%)发生夜间眩光,高度近视组为137眼(26.2%),两组差异有显著性(P=0.000)。低、中度近视组发生眩光眼和无眩光眼在术前暗光下瞳孔直径上差异有显著性(P=0.000),拟矫正屈光度上差异无显著性(P=0.104);高度近视组在暗光下瞳孔直径和拟矫正屈光度上差异均具有显著性(P=0.001,0.002)。结论:LASIK术后夜间眩光与术前暗光下瞳孔直径有关,高度近视患者也与拟矫正屈光度有关。

AIM:To investigate the preoperative relative factors for night glare after LASIK for myopia. METHODS:A total of 665 cases(1257 eyes) with myopia were divided into 2 groups:group Ⅰ(low and moderate myopia) -1.00~-6.00D,group Ⅱ (high myopia) -6.25~ -14.25D. Pupil sizes during scotopic conditions were measured before surgery using ObscanⅡ. All cases underwent standard LASIK. The cases were observed postoperatively 3 months. The self-perceived night glare of each eye was investigated. The relative factors of night glare such as preoperative scotopic pupil sizes and attempted correction of spherical equivalent were analyzed. RESULTS:The scotopic pupil sizes in low,moderate myopia group were 6.81±0.50mm,and that in high myopia group was 6.98±0.57mm. There was significant difference in the scotopic pupil sizes between the two groups(P=0.001). The night glare in low,moderate myopia group was complained by 58 eyes (7.9%),and that in high myopia group was complained by 137 eyes (26.2%). There was significant difference in the night glare between the myopia of degrees(P=0.000). There were significant differences in pupil size and attempted correction of spherical equivalent betweens eyes with night glare and without night glare in high myopia group (P=0.001,0.002,respectively),and there were significant differences in pupil size,and there were no significant difference in attempted correction of spherical equivalent in low,moderate myopia group(P=0.000,0.104,respectively). CONCLUSION:The scotopic pupil sizes preoperatively are correlated with post-LASIK night glare during scotopic conditions,and the attempted correction of spherical equivalent is correlated with post-LASIK night glare in high myopia.

R779.63