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Optics Letters

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  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 21 — Nov. 1, 2007
  • pp: 3203–3205

Correcting anterior corneal aberration and variability of lens movements in keratoconic eyes with back-surface customized soft contact lenses

Minghan Chen, Ramkumar Sabesan, Kamran Ahmad, and Geunyoung Yoon  »View Author Affiliations


Optics Letters, Vol. 32, Issue 21, pp. 3203-3205 (2007)
http://dx.doi.org/10.1364/OL.32.003203


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Abstract

Customized contact lenses are limited in their correction performance, especially on irregular corneas, owing to decentration and rotation of the lenses. To overcome this limitation, we proposed to customize the back surface of soft contact lenses to match the anterior irregular corneal surface. These lenses were designed to correct anterior corneal aberrations and to improve lens stability. Although in keratoconic eyes the anterior corneal aberrations were effectively corrected, significant residual aberrations were observed. The internal optics, especially the posterior surface of the cornea, was the main source of these residual aberrations. Compared with conventional soft contact lenses, lens stability, on average over three eyes, was improved by a factor of 2 for horizontal and vertical decentrations and a factor of 5 in rotational orientation with the back-surface customized lenses.

© 2007 Optical Society of America

OCIS Codes
(170.4460) Medical optics and biotechnology : Ophthalmic optics and devices
(220.3630) Optical design and fabrication : Lenses
(330.4460) Vision, color, and visual optics : Ophthalmic optics and devices

ToC Category:
Vision, color, and visual optics

History
Original Manuscript: June 21, 2007
Revised Manuscript: September 12, 2007
Manuscript Accepted: September 24, 2007
Published: October 29, 2007

Virtual Issues
Vol. 2, Iss. 12 Virtual Journal for Biomedical Optics

Citation
Minghan Chen, Ramkumar Sabesan, Kamran Ahmad, and Geunyoung Yoon, "Correcting anterior corneal aberration and variability of lens movements in keratoconic eyes with back-surface customized soft contact lenses," Opt. Lett. 32, 3203-3205 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-21-3203


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References

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