LASIK术前瞳孔大小与术后夜间眩光的关系

Analysis of relationship between pupil size and night glare after LASIK for myopia

目的探讨行双眼准分子激光原位角膜磨镶术(LASIK)者术前瞳孔大小与术后夜间眩光的关系。方法将240例(480眼)按近视屈光度分为2组:组Ⅰ(低、中度近视组)-1.00D^-6.00D;组Ⅱ(高度近视组)-6.25D^-12.50D。以TOPCON Auto Kerato_Refractometer KR-8100测定240例(480眼)近视眼术前暗环境中的瞳孔大小,分析所得数据。记录术前、术后的屈光度和最佳矫正视力(BCVA)。术后3月随访时,患者填写一份术后夜间眩光的问卷。结果双眼平均BCVA手术前后差异无统计学意义(P>0.05)。低、中度近视组平均暗视瞳孔直径(6.24±0.72)mm;高度近视组平均(7.33±0.41)mm,两组差异有统计学意义(P<0.01)。术后夜间眩光与术前暗环境中大的瞳孔明显相关(P<0.01)。术后夜间眩光与性别亦有显著相关性(P<0.05),男性术后夜间眩光发生率大于女性。结论LASIK术前暗环境中大的瞳孔与术后夜间眩光有关联。因此对行LASIK手术的近视患者应进行术前瞳孔大小的评估。

Objective To investigate the correlation between pupil sizes and night glare after bilateral laser in situ keratomileusis （LASIK） for myopia. Methods 240 patients （480 eyes） were divided into 2 groups：group Ⅰ （low and moderate myopia） - 1.00D - -6.00D, group Ⅱ（high myopia） -6.25D- - 12.50D. Pupil sizes during seotopie conditions were measured before surgery using TOPCON Auto Kerato-Refraetometer KR-8100,then applying the mean outcomes of the three examinations,we carry out analyzing. Pre-and postoperative refraction and best corrected visual acuity （BCVA） were registered. At the 3-month follow-up visit, the patient completed a questionnaire regarding night glare postoperatively. Results The mean bilateral BCVA was not changed by the operations （ P 〉 0.05 ）. The seotopie pupil sizes in low, moderate myopia group was 6.24±0.72 mm;and that in high myopia group was 7.33 ± 0.41 mm. We found the significant difference in the seotopie pupil sizes between the myopes of degrees （ P 〈 0.01）. Large seotopie pupil size preoperatively had a close relation with the occurrence of night glare postoperatively （ P 〈 0.01 ）. We also found a significant correlation between gender （males） and the occurrence of night glare postoperatively （ P 〈 0. 05 ）. Conclusions Large pupil sizemeasured preoperatively is correlated with post-LASIK night glare during seotopie conditions. We recommend preoperative evaluation of pupil sizes in all patients prior to LASIK surgery.