研究近视眼准分子激光原位磨镶术后角膜非球面性的改变  

The investigation of corneal asphericity changes after hyperopia laser in situ keratomileusis

作　　者：刘朝[1] 

机构地区：[1]河南省濮阳市油田总医院眼科,河南濮阴457001

出　　处：《中国伤残医学》2013年第5期14-15,共2页Chinese Journal of Trauma and Disability Medicine

摘　　要：目的:对近视眼准分子激光原位磨镶术后角膜非球面性的改变进行研究。方法:对100名患有近视眼的病人(124只眼)在实施近视眼准分子激光原位磨镶术后进行回顾、性分析,在近视眼准分子激光原位磨镶术前和术后对患者角膜的非球面参数Q值、切削的偏心值、角膜曲率sink值(K)进行测量,对△Q与角膜曲率sink值的改变(△K)、及预期的矫正值(SE)它们之间的相关性进行分析。结果:近视眼患者的角膜曲率变得平坦;在术前时角膜的形状是扁长型,即非球面参数Q<0,术后角膜的形状为扁圆型,即非球面参数Q>0;△Q与角膜曲率sink值的改变(△K)、及预期的矫正值(SE)之间存在相关性(二者都P<0.05),但是术后Q值和偏心值之间没有相关联系(P>0.05)。结论:近视眼患者在实施近视眼准分子激光原位磨镶术后角膜非球面参数Q值增大,△Q与SE、△K相关。Objective：To investigate the corneal asphericity changes after hyperopia laser in situ keratomileusis. Methods：The retrospective analysis of 100 cases of hyperopia laser in situ keratomileusis patients （124 eyes） was analized. The corneal asphericity parameter Q value, the cutting eccentric value and the sink value of the cornea curvature （K） were detected before and after the hyperopia laser in situ keratomileusis. Moreover, the relevance analysis on the changes of Q value （△Q） and he sink value （△K）, and the expected correction value （SE） was made. Results： The curvature of the cornea flattened for the myopia patients. The shape of the cornea was prolate before the surgery, the asphrical parameter Q 0. And the shape of the cornea was oval after the surgery, the asphrical parameter Q 0. There existed correlation between the changes of △Q and △K, and the expected correction value （SE） （P0.05 for both）. However, there did not exist orrelation between Q value and eccentric value after the surgery （P0.05）. Conclusion： After the hyperopia laser in situ keratomileusis, the corneal asphericity parameter Q value increased, and there exists correlation among SE, △K and △Q.

关 键 词：近视眼 角膜 非球面性 角膜曲率 Q值 

分 类 号：R681[医药卫生—骨科学]