成年近视眼角膜非球面性及其相关因素的分析  

The Corneal Asphericity and Its Related Factors in Adults with Myopia

作　　者：张日平[1] 张铭志[1] 孙丽霞[1] 李瑾瑜[1] 

机构地区：[1]汕头大学.香港中文大学联合汕头国际眼科中心,广东汕头515041

出　　处：《汕头大学医学院学报》2010年第3期161-162,167,共3页Journal of Shantou University Medical College

基　　金：汕头市科技计划项目(汕府科(2008)85号)

摘　　要：目的:探讨成年近视眼角膜非球面参数(Q值)及其相关因素。方法:163例(326眼)近视者按低、中、高度近视程度分为3组,采用i-Trace视觉功能分析仪对Q值进行测量。对Q值与角膜散光和曲率、屈光度、中央角膜厚度及6 mm角膜下、上方平均屈光度差值(I-S值)之间进行相关性分析。结果:所有成年近视眼平均Q值为-0.088±0.095。3组平均Q值分别为-0.083±0.107,-0.085±0.094和-0.099±0.085。Q值与角膜散光呈负相关性(r=-0.27,P<0.05)。Q值与角膜曲率、屈光度、中央角膜厚度及6 mm区I-S值之间无相关性。结论:近视眼Q值与角膜散光有弱的负相关性,与屈光度及角膜其它参数相对独立。Objective： To study the corneal asphericity（Q value）and its related factors in adults with myopia. Methods： One hundren and sixty-three patients（326 eyes）with myopic were divided into groups of low myopia, moderatemyopia and high myopia. Q values were obtained with i-Trace-type visual function analyzer. The correlation analysis was conducted Q value with comea astigmatism, cornea curvature, diopter, central comeal thickness and mean refractive error. Results： The average Q value was -0.088 ± 0.095 in adults with myopia. The average Q value was -0.083 ± 0.107, -0.085± 0.094 and -0.099 ± 0.085 among groups, respectively. There was a negative relationship between Q value and cornea astigmatism（ r =-0.27, P 〈 0.05）. The Q value had no correlation with cornea curvature, diopter, central corneal thickness and I-S value. Conclusion： A weak negative relativity exists between Q value and cornea astigmatism. The Q value is relatively independent with diopter and other corneal factors.

关 键 词：角膜 非球面 近视 

分 类 号：R778.1[医药卫生—眼科]