国人近视眼Q值的相关因素分析  

Related factor analysis of corneal asphericity for myopia

作　　者：许琛琛[1] 陶育华[1] 王勤美[1] 吴江秀[1] 

机构地区：[1]温州医学院附属眼视光医院,温州325027

出　　处：《中国实用眼科杂志》2007年第5期501-503,共3页Chinese Journal of Practical Ophthalmology

摘　　要：目的探讨国人近视眼患者角膜非球性系数（Q值）的影响因素。方法随机选择18～32岁的近视96眼、正视54眼,所有眼均行Humphrey Corneal Topography System（Zeiss）和Shack-Hartman原理设计的WASCA Wavefront Analyzer（Zeiss）检查,分析直径为6mm处Q值与像差。结果所有近视眼Q值平均为-0.26±0.12,偏相关分析表明近视眼Q值与角膜6mm（r=0.254,p=0.013）、7mm（r=0.352,p=0.000）处的屈光力及高阶像差中的C12（r=0.466,p=0.000）存在统计学上的正相关,而与屈光度数（r=-0.068,p=0.512）、RMSHO（r=-0.057,p=0.584）、C7（r=-0.108,p=0.297）、C8（r=0.099,p=0.338）、SimK值（K1：r=0.069,p=0.504;K2：r=0.070,p=0.500）及角膜散光量（r=0.013,p=0.900）不存在统计学上的相关性。结论Q值与球差和角膜旁中央区屈光力密切相关,而与屈光度数无关。Objective To investigate the related factor analysis of corneal asphericity（Q-value）for myopia. Methods Corneal topography and wavefront data were collected from 96 myopic eyes and 54 emmetropic eyes. The Q-value was computed from corneal Shape Factor （SF）, and wavefront data was computed for a 6.0-mm pupil. Results The average of Q-values is -0.26 ± 0.12 for all myopic eyes. The relationship between Q-value and Spherical aberration（C12） was statistically significant （r=0.466, p=0.000）. This was also the case for the relationship between Q-value and the diopter of curvature in 6mm （r=0.254, p=0.013）or the diopter of curvature in 7mm（r=0.352, p=0.000）. In addition, no relationship could be demonstrated between Q-value and RMS HO（r=-0.057, p=0.584） or C7（r=-0.108, p=0.297）or C8（r=-0.099, p=0.338）,and there was no relationship between Q-value and refractive error （r=-0.068, p=0.512）. Conclusion Spherical aberration and the diopter of curvature in 6mm or in 7mm are the most important related factor of Q-value.

关 键 词：近视眼 角膜非球性系数Q值 球差 

分 类 号：R776.4[医药卫生—眼科]