OSA's Digital Library

Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 14 — Jul. 15, 2009
  • pp: 2219–2221

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)

View Full Text Article

Enhanced HTML    Acrobat PDF (217 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



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

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

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)

Sort:  Author  |  Year  |  Journal  |  Reset  


Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


Fig. 1 Fig. 2 Fig. 3
Fig. 4

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited