The Position of the Corneal Apex in the Normal Eye
作者:
ALAN TOMLINSON,
CAROL SCHWARTZ,
期刊:
American Journal of Optometry and Physiological Optics
(OVID Available online 1979)
卷期:
Volume 56,
issue 4
页码: 236-240
ISSN:0093-7002
年代: 1979
出版商: OVID
关键词: corneal apex position;visual axis;photokeratoscopy;shape factor;contact lens centering
数据来源: OVID
摘要:
The position of the apex of the cornea was found for 1000 “normal” eyes (500 right; 500 left) from photoelectronic keratoscopic analysis. The corneal apex was located on the vertical meridian in 21.3% of the eyes, temporally in 62.4%, and nasally in 16.3%. Although a temporally biased location for the corneal apex was demonstrated, 62.2% of the eyes had the apex within 0.5 mm of the visual axis. The implications of these findings in contact lens fitting are discussed.
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