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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 25 — Dec. 13, 2004
  • pp: 6278–6288

Study of the tear topography dynamics using a lateral shearing interferometer

Alfredo Dubra, Carl Paterson, and Christopher Dainty  »View Author Affiliations


Optics Express, Vol. 12, Issue 25, pp. 6278-6288 (2004)
http://dx.doi.org/10.1364/OPEX.12.006278


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Abstract

The dynamics of the pre-corneal tear film topography are studied on 21 subjects with a purpose-built lateral shearing interferometer. It was found that in most of the recorded data the tear surface is continuous and smooth. Eye movement is identified as a major problem in quantitative tear topography estimation. Based on the reconstructed tear topography maps, the effects of tear dynamics in visual performance, wavefront sensing for refractive surgery and ophthalmic adaptive optics are discussed in terms of wavefront RMS. The potential of lateral shearing interferometry for clinical applications such as dry eye diagnosis and contact lens performance studies is illustrated by the recorded topography features such as post-blink undulation, break-up, eyelid-produced bumps/ridges, bubbles and rough tear surfaces in front of contact lenses.

© 2004 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(170.3890) Medical optics and biotechnology : Medical optics instrumentation
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine
(330.4300) Vision, color, and visual optics : Vision system - noninvasive assessment
(330.4460) Vision, color, and visual optics : Ophthalmic optics and devices
(330.5370) Vision, color, and visual optics : Physiological optics

ToC Category:
Research Papers

History
Original Manuscript: October 29, 2004
Revised Manuscript: November 25, 2004
Published: December 13, 2004

Citation
Alfredo Dubra, Carl Paterson, and Christopher Dainty, "Study of the tear topography dynamics using a lateral shearing interferometer," Opt. Express 12, 6278-6288 (2004)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-12-25-6278


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