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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 38, Iss. 24 — Dec. 15, 2013
  • pp: 5208–5211

Are the fluctuations in dynamic anterior surface aberrations of the human eye chaotic?

Varadharajan Jayakumar, Damber Thapa, Natalie Hutchings, and Vasudevan Lakshminarayanan  »View Author Affiliations


Optics Letters, Vol. 38, Issue 24, pp. 5208-5211 (2013)
http://dx.doi.org/10.1364/OL.38.005208


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Abstract

The purpose of the study is to measure chaos in dynamic anterior surface aberrations and examine how it varies between the eyes of an individual. Noninvasive tear breakup time and dynamic corneal surface aberrations were measured for two open-eye intervals of 15 s. The maximal Lyapunov exponent (MLE) was calculated to test the nature of the fluctuations of the dynamic anterior surface aberrations. The average MLE for total higher-order aberration (HOA) was found to be small (+0.0102±0.0072)μm/s. No significant difference in MLE was found between the eyes for HOA (t-test; p=0.131). Data analysis was carried out for individual Zernike coefficients, including vertical prism as it gives a direct measure of the thickness of the tear film over time. The results show that the amount of chaos was small for each Zernike coefficient and not significantly correlated between the eyes.

© 2013 Optical Society of America

OCIS Codes
(330.5370) Vision, color, and visual optics : Physiological optics
(330.7326) Vision, color, and visual optics : Visual optics, modeling

ToC Category:
Vision, Color, and Visual Optics

History
Original Manuscript: September 30, 2013
Manuscript Accepted: October 18, 2013
Published: December 3, 2013

Virtual Issues
Vol. 9, Iss. 2 Virtual Journal for Biomedical Optics

Citation
Varadharajan Jayakumar, Damber Thapa, Natalie Hutchings, and Vasudevan Lakshminarayanan, "Are the fluctuations in dynamic anterior surface aberrations of the human eye chaotic?," Opt. Lett. 38, 5208-5211 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-24-5208


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