The position of the corneal apex in the normal eye.

@article{Tomlinson1979ThePO,
  title={The position of the corneal apex in the normal eye.},
  author={Alan Tomlinson and Carlos Alberto Schwartz},
  journal={American journal of optometry and physiological optics},
  year={1979},
  volume={56 4},
  pages={236-40}
}
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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