Jc. He et al., MEASUREMENT OF THE WAVE-FRONT ABERRATION OF THE EYE BY A FAST PSYCHOPHYSICAL PROCEDURE, Journal of the Optical Society of America. A, Optics, image science,and vision., 15(9), 1998, pp. 2449-2456
We used a fast psychophysical procedure to determine the wave-front ab
errations of the human eye in vivo. We measured the angular deviation
of light rays entering the eye at different pupillary locations by ali
gning an image of a point source entering the pupil at different locat
ions to the image of a fixation cross entering the pupil at a fixed lo
cation. We fitted the data to a Zernike series to reconstruct the wave
-front aberrations of the pupil. With this technique the repeatability
of the measurement of the individual coefficients was 0.019 mu m. The
standard deviation of the overall wave-height estimation across the p
upil is less than 0.3 mu m. Since this technique does not require the
administration of pharmacological agents to dilate the pupil, we were
able to measure the changes in the aberrations of the eye during accom
modation. We found that administration of even a mild dilating agent c
auses a change in the aberration structure of the eye. (C) 1998 Optica
l Society of America.