Abstract
We have measured refractive error through a succession of small regions of the cornea. In these initial measurements approximately twenty regions of 1 mm diameter are selected for each measured eye. For experimental convenience, the regions are chosen along vertical horizontal and 45 degree oblique meridia through a central point near the comeal apex. Refractive error at each locus is determined by a variant of the Scheiner principle.
© 1991 Optical Society of America
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