Objective technique for the determination of monochromatic aberrations of the human eye.
Objective technique for the determination of monochromatic aberrations of the human eye.
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DOI：
10.1364/josaa.1.000987
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发表时间：
1984-09
期刊：
影响因子：
--
通讯作者：
G. Walsh;W. Charman;H. Howland
中科院分区：
文献类型：
--
作者：
G. Walsh;W. Charman;H. Howland
Howland和Howland的主观交叉圆柱像差仪方法[J. Opt. Soc. Am. 67，1508（1977）]已经通过添加分束器和照相机来修改，以允许像差仪网格的畸变视网膜图像的直接照相记录。然后，可以从网格畸变的直接测量中推导出眼像差。对11名受试者的初步结果证实了早期的发现，即彗差、三级像差在降低视网膜图像质量方面比球面像差或其他四级像差更重要，并且对于普通受试者，衍射极限瞳孔尺寸约为3 mm。这种测量波像差的新客观方法在波像差系数的总体估计中产生显著更小的方差。像差多项式比以前的主观方法。
The subjective crossed-cylinder aberroscope method of Howland and Howland [J. Opt. Soc. Am. 67, 1508 (1977)] has been modified by the addition of a beam splitter and a camera to permit direct photographic recording of the distorted retinal image of the aberroscope grid. The ocular aberration can then be deduced from direct measurements of the grid distortion. Preliminary results on 11 subjects confirm earlier findings that comalike, third-order aberrations are more important than spherical or other fourth-order aberrations in degrading the retinal image and for the average subject, the diffraction-limited pupil size is approximately 3 mm. This new objective method for measuring wave aberration yields significantly less variance in population estimates of the coefficients of the wave-aberration polynomial than that of the previous subjective method.