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Corneal Analysis with a Rectilinear Photokeratoscope

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Abstract

Photorefractive keratectomy (PRK) involves precisely sculpting a lens on the anterior cornea by excimer laser photoablation (1). Consequently, patient positioning relative to the laser must be within certain predefined tolerance levels (2), and the procedure should be centered on the patient's line of sight (3).

© 1992 Optical Society of America

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