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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 12, Iss. 10 — Oct. 1, 1995
  • pp: 2267–2273

Aberrations associated with rigid contact lenses

David A. Atchison  »View Author Affiliations


JOSA A, Vol. 12, Issue 10, pp. 2267-2273 (1995)
http://dx.doi.org/10.1364/JOSAA.12.002267


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Abstract

A rigid contact lens on an eye can produce levels of spherical aberration very different from those produced by a spectacle lens in front of the eye. These levels are considerably affected by contact lens surface asphericity. Change in longitudinal spherical aberration associated with aspherizing a contact lens surface is well predicted by a simple equation for change in sagittal power of the surface. Displacing an aspheric contact lens on the eye can produce considerable defocus, which is well predicted by simple equations for change in sagittal and tangential surface powers. The best refractive correction with contact lenses can be determined only by overrefraction with a patient wearing a contact lens of power and characteristics similar to that which will be prescribed. An aspheric contact lens that moves to a considerable extent on the eye will cause more unstable vision than will a spherical lens that moves to the same extent.

© 1995 Optical Society of America

History
Original Manuscript: September 12, 1994
Revised Manuscript: December 16, 1994
Manuscript Accepted: January 17, 1995
Published: October 1, 1995

Citation
David A. Atchison, "Aberrations associated with rigid contact lenses," J. Opt. Soc. Am. A 12, 2267-2273 (1995)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-12-10-2267

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