Demonstrates a new method to correct measurement errors in photokeratoscopy, aiding corneal analysis.
The errors of classical photokeratoscopy are shown experimentally to be very small. A procedure is described to correct these errors. A method is presented for calculating the radii of the principal meridians of a cornea from the measurements of any three meridians of a photokcratogram.
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Mandell et al. (1969) studied this question.
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