摘要
目的探讨近视眼像差成分与其屈光参数的相关性。方法随机选取在本中心就医的102例204眼近视屈光手术患者,使用WaveScan波前像差仪分别测量暗室下患者的左、右眼像差,Orbscan-Ⅱz系统测量患者术前的角膜前表面非球面参数(Q值)、Tomey AL-2000 Biometer/Pachymeter眼部A超仪测量患者的眼轴,显然验光法测患者的屈光度数,运用SPSS13.0统计分析软件分别进行像差成分对等效球镜、角膜Q值、眼轴的相关分析,了解近视眼各像差成分与屈光参数间的相关性强弱。结果眼轴、总像差、球差3项数据呈正态分布(P>0.05),等效球镜、角膜Q值、总高阶像差、彗差4项数据呈非正态分布(P<0.05)。近视眼总像差与等效球镜呈高度负相关(Spearman相关系数为-0.797,P=0.000),总像差与眼轴长则呈中度正相关(Pearson相关系数为0.368,P=0.000)。而总像差对角膜Q值,三阶彗差和四阶球差对等效球镜、角膜Q值、眼轴长度则无相关性(P均>0.05)。结论近视眼屈光参数中屈光度数和眼轴长度对波前像差产生重要影响,屈光度数越高和眼轴越长者其总像差值越大,而角膜的非球面特性对近视眼的波前像差无明显影响。
Objeetive To investigate the correlations of wavefront aberrations to spherical equivalent（SE） in myopia. Methods One hundred and two patients with myopia（ 204 eyes） were chosen from our department randomly. Myopic bilateral wavefront aberrations of both eyes were captured by WaveScan wavefront aberration instrument in a dark room, the anterior corneal aspherical parameter （ Q value） were examined by Orbscan-Ⅱ z system, and the myopic axial length （AL） were measured by A ultrasonography of Tomey AL-2000 Biometer/Pachymeter. Diopters were detected by subjective optometry. The correlations of wavefront aberrations to SE, Q value and AL were analyzed,respectively,by SPSS version 13.0 software to comprehend the correlation of aberration to diopter. Results Data of AL, total aberrations and spherical aberration showed normal distribution （P 〉 0.05 ）, but SE, Q value, total highorder aberration and coma showed abnormal distribution（P 〈 0.05 ）. Statistics showed that total aberrations and SE had strong negative correlations （Spearman correlation was -0.797, P = 0. 000）, and total aberrations and AL had moderate positive correlations （ Pearson correlation was 0.358 ,P = 0.000）. But no correlation was observed between total aberrations and Q value,as well as coma and spherical aberration to SE,Q value,AL,respectively（ all P 〉 0. 05）. Conclusion In diopter of myopia, myopic degree and AL have important effects on myopic wavefront aberrations. The higher myopic degree and longer AL are, the more total aberration is. While corneal aspherical characteristics has no significant effect on wavefront aberration in myopia.
出处
《眼科新进展》
CAS
北大核心
2009年第5期354-355,358,共3页
Recent Advances in Ophthalmology
基金
广西壮族自治区卫生厅自筹经费科研课题基金资助(编号:2006164)~~
关键词
近视
波前像差
等效球镜
Q值
眼轴
myopia
wavefront aberration
spherical equivalent
Q value
axis oculi
