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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 35, Iss. 10 — May. 15, 2010
  • pp: 1539–1541

Spherical lens versus aspheric artificial cornea for intraocular lens testing

Fidel Vega, María S. Millán, and Benjamin Wells  »View Author Affiliations

Optics Letters, Vol. 35, Issue 10, pp. 1539-1541 (2010)

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Recent versions of the International Organization for Standardization (ISO)-based model eye for intraocular lens testing include an artificial cornea whose spherical aberration is chosen to match the value of a human cornea. Aspheric lenses have been used as artificial corneas, but they are expensive and difficult to manufacture. This Letter demonstrates that the aspheric lens can be advantageously replaced with a simple biconvex spherical lens of the same focal length and similar wavefront error. A linear dependence is shown between the Coddington shape factor of the spherical lens and the value of the induced spherical aberration. This relationship is used to match the wavefront error of the spherical lens to the one produced by the aspheric lens. A modified ISO model eye, containing this alternative spherical lens as the artificial cornea, is proposed for the on-axis optical assessment of intraocular lenses. Its suitability for off-axis testing is discussed.

© 2010 Optical Society of America

OCIS Codes
(170.4470) Medical optics and biotechnology : Ophthalmology
(330.4460) Vision, color, and visual optics : Ophthalmic optics and devices
(350.4800) Other areas of optics : Optical standards and testing

ToC Category:
Medical Optics and Biotechnology

Original Manuscript: December 21, 2009
Revised Manuscript: March 26, 2010
Manuscript Accepted: March 26, 2010
Published: May 5, 2010

Virtual Issues
Vol. 5, Iss. 10 Virtual Journal for Biomedical Optics

Fidel Vega, María S. Millán, and Benjamin Wells, "Spherical lens versus aspheric artificial cornea for intraocular lens testing," Opt. Lett. 35, 1539-1541 (2010)

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