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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 4, Iss. 9 — Sep. 4, 2009

Extended depth of focus contact lenses for presbyopia

Alex Zlotnik, Shai Ben Yaish, Oren Yehezkel, Karen Lahav-Yacouel, Michael Belkin, and Zeev Zalevsky  »View Author Affiliations


Optics Letters, Vol. 34, Issue 14, pp. 2219-2221 (2009)
http://dx.doi.org/10.1364/OL.34.002219


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Abstract

The purpose of this Letter is to design, develop, fabricate, and test in clinical trials a new (to our knowledge) type of contact lenses that provides simultaneous near and distance focused vision for presbyopic subjects, including those with up to 2.00 diopters (D) of regular/irregular astigmatism, as an alternative to multifocal contact lenses. The purpose is obtained by generating an optical pattern on the front surface of contact lenses, capable of extending the depth of focus of lenses by 3.00 D with high visual contrast. The pattern was fabricated on top of contact lenses and tested by the use of an eye simulation as well as in clinical trials. Use of the extended depth of focus contact lens enabled patients to achieve good visual acuity and contrast sensitivity for both distance and near vision without compromising the energy distribution or the visual fields.

© 2009 Optical Society of America

OCIS Codes
(330.1070) Vision, color, and visual optics : Vision - acuity
(330.4460) Vision, color, and visual optics : Ophthalmic optics and devices
(110.7348) Imaging systems : Wavefront encoding

ToC Category:
Vision, Color, and Visual Optics

History
Original Manuscript: March 4, 2009
Revised Manuscript: June 13, 2009
Manuscript Accepted: June 15, 2009
Published: July 14, 2009

Virtual Issues
Vol. 4, Iss. 9 Virtual Journal for Biomedical Optics

Citation
Alex Zlotnik, Shai Ben Yaish, Oren Yehezkel, Karen Lahav-Yacouel, Michael Belkin, and Zeev Zalevsky, "Extended depth of focus contact lenses for presbyopia," Opt. Lett. 34, 2219-2221 (2009)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-34-14-2219


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