Patent ID: 7246906

Claim:
A correction-factor determination apparatus comprising: an image-data generation section for performing simulation of how an eyesight-test-chart target is seen, according to measurement data which indicates at least the wavefront aberrations of an eye under measurement, with a correction factor for correcting refraction being taken into account, to generate target retina image data; a correction-factor setting section for specifying a correction factor to be given to the image-data generation section; and a determination section for determining whether the specified correction factor is appropriate, according to corrected target retina image data generated by the image-data generation section and corrected by the correction factor specified by the correction-factor setting section, wherein the correction-factor setting section specifies the correction factor according to a result obtained by the determination section, and the correction-factor setting section changes the correction factor by the correction-factor setting section until the determination section determines that the correction factor is appropriate.