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Hartmann-Shack波前传感器人眼像差仪对10只屈光度为0 D-－5.0 D、直径为3 mm和6 mm的人眼瞳孔的波前像差进行测量, 其中每只人眼在5 s内连续测量125次, 测量频率为25 Hz.为确定测量过程中是否引入人为像差, 对人造眼3 mm和6 mm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3 mm和6 mm瞳孔总的Zernike波前像差均方根涨落幅度的平均值分别为0.087 μm和0.105 μm, 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0.06-0.02 μm;人眼波前像差的涨落频率达6 Hz.

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 3 mm and 6 mm for 10 eyes with cliopter of 0 D-－5.0 D 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 5 s. 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 6 mm for 10 eyes is 0.08 μm and 0.105 μm, 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 0.06-0.02 μm. The frequency of the fluctuation for all the Zernike order is 6 Hz.