LASIK术前近视人群Q值与角膜前表面相关性分析  

An analysis of the relationship between Q-value with parameters of corneal allterior surface before laser in situ keratomileusis for myopia

作　　者：田英[1] 张改玲[1] 张幼梅[1] 

机构地区：[1]郑州大学第一附属医院眼科,450052

出　　处：《中华眼外伤职业眼病杂志》2011年第8期595-597,共3页Chinese Journal of Ocular Trauma and Occupational Eye Disease

摘　　要：目的分析LASIK术前近视人群Q值与角膜前表面诸参数之间的相关性。方法应用OrbscanⅡ眼前段分析系统测量300例（600眼）近视者的Q值和角膜曲率、模拟角膜镜读数、3mm和5mm区角膜不规则指数、角膜前表面Diff值等参数。分析Q值与这些参数的相关性。结果600眼的Q值范围为-0．51～＋0．37，平均-0．17±0．11；角膜曲率为（43．59±1．54）D；模拟角膜镜读数为（43．89±1．46）D；3mm区不规则指数为（1．32±0．41）D；5mm区不规则指数为（1．72±0．63）D；角膜前表面Diff值为（0．07±0．05）mm。统计学分析显示Q值与其他参数之间均为负相关。结论近视人群Q值与角膜前表面屈光参数呈负相关。Objective To measure the corneal Q value and other anterior surface refractive parameters in myopic population and analyze the relationship. Methods The Q valve and other related anterior corneal refractive parameters included corneal curvature, simulated keratometry, irregular index in 3 and 6 mm area and Diff value were measured with Orbscan Ⅱ anterior segment systemin on 300 myopic patients （600 eyes）. The relationship betweend the Q value and other refractive parameters were analyzed. Results In the 600 eyes,the Q value ranged from -0.51 to 0.37 and averaged -0.17 ±0.11 ,corneal curvature,was （43.59 ± 1.54 ） D, simulated keratometry was （ 43.89 ±1.46 ） D, eornael irregular index in 3 and 5 mm area were （ 1. 324 ± 0.41 ） D and（ 1.72 ± 0.63 ） D and anterior corneal surface Diff was （ 0.07 ± 0.05 ） mm. Statistic analysis showed negative relationship between Q value with other refractive parameters. Conclusion In myopic eyes, the Q value has negative relationship with other corneal anterior surface refractive parameters.

关 键 词：角膜前表面 Q值 近视 

分 类 号：R779.63[医药卫生—眼科]