人眼波前像差的动态特性研究  

Dynamic Characteristic of the Wavefront Aberrations in Human Eye

作　　者：全薇[1] 高博宇[1] 王炜晨 柏宝华[1] 

机构地区：[1]吉林大学通信工程学院,长春130012

出　　处：《光子学报》2015年第1期101-107,共7页Acta Photonica Sinica

基　　金：国家自然科学基金(No.60777011);吉林省自然科学基金(No.201215040)资助

摘　　要：人眼波前像差随时间涨落会引起人眼光学性能和视觉功能的改变.采用改进的HartmannShack波前传感器人眼像差仪对10只屈光度为0D^-5.0D、直径为3mm和6mm的人眼瞳孔的波前像差进行测量,其中每只人眼在5s内连续测量125次,测量频率为25Hz.为确定测量过程中是否引入人为像差,对人造眼3mm和6mm瞳孔的动态波前像差进行测量比对.结果表明:所测量的10只人眼3mm和6mm瞳孔总的Zernike波前像差均方根涨落幅度的平均值分别为0.087μm和0.105μm,均大于Marechal衍射极限;Zernike第3阶到第7阶波前像差均方根涨落幅度随像差阶数的递增而下降,涨落幅度为0.06~0.02μm;人眼波前像差的涨落频率达6Hz.The wavefront aberrations of human eye are nor static but fluctuate over time which can cause dynamic changes in both the optical properties and the visual performance of human eyes.The dynamic wavefront aberrations across pupil diameter of 3mm and 6mm for 10 eyes with cliopter of 0D^-5.0D were measured at temporal frequency of 25 Hz by the modified Hartmann-Shack sensor.Each human eye was tested 125 times in a duration of 5s.To ensure that measurement did not introduce artifacts,the dynamic wavefront aberrations of 3 mm and 6mm for an artificial eye was acquired.The average amplitude of the fluctuation of the total rms wavefront error of 3mm and 6mm for 10 eyes is 0.08μm and0.105μm,respectively,which is greater than Marechal diffraction tolerance.The amplitude of the fluctuation of rms wavefront error from 3rd up to 7th order decreases monotonically as the Zernike order increases,the amplitude of the fluctuation are 0.06~0.02μm.The frequency of the fluctuation for all the Zernike order is 6Hz.

关 键 词：动态波前像差 眼波前像差 Hartmann-Shack波前传感器 像差矫正 频谱 

分 类 号：R399.14[医药卫生—基础医学] TH741[机械工程—光学工程]