【摘要】 目的比较准分子激光上皮瓣下角膜磨镶术(laser subepitheliar keratomileusis, LASEK)术后与准分子激光原位角膜磨镶术(laser in situ keratomileusis, LASIK)后角膜后表面形态的变化。方法将134例268眼近视患者分为两组,其中接受LASEK治疗的为1组79例158眼,平均屈光度( -5.67±0.59)D,接受LASIK治疗的为2组55例110眼,平均屈光度( -5. 97±0.83)D。术后采用orbscan -2角膜地形图系统随访6个月。结果术后6个月时,1、2组的角膜中央3mm区后表面屈光力和角膜后顶点到理想球面之间的距离(diff值)的改变量,2组相比差异有显著性(P<0.01)。结论 LASEK与LASIK术后角膜表面均有不同程度的前突且与残留角膜床厚度相关。LASEK在角膜后表面形态的稳定性方面优于LASIK。更多还原

【Abstract】 Objective To compare the shapes of posterior corneal surface after laser subepitheliar keratomileusis(LASEK)and laser in situ keratomileusis(LASIK).Methods The 268 eyes of 134 cases were divided into two groups:The first group had 158 eyes of 79 cases,which were accepted the LASEK and whose average diopter was(-5.67±0.59)D.The second group had 110 eyes of 55 cases,which were accepted the LASIK and whose average diopter was(-5.97±0.83)D.Orbscan corneal topography system was used to follow up for 6 month postoperatively.Results In the sixth month after operation,we observed the posterior corneal power within 3mm of corneal center and the changes of the diff value between two groups.There were significantly statistical difference(P<0.01).Conclusions A certain degree protrusion would come into being after LASEK and LASIK,which were related to the thickness of the residual cornea.The stability of the shapes of posterior corneal surface after LASEK was more excellence than that after LASIK.更多还原