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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 7 — Apr. 7, 2014
  • pp: 7972–7988

Improved eye-fixation detection using polarization-modulated retinal birefringence scanning, immune to corneal birefringence

Kristina Irsch, Boris I. Gramatikov, Yi-Kai Wu, and David L. Guyton  »View Author Affiliations

Optics Express, Vol. 22, Issue 7, pp. 7972-7988 (2014)

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We present an improved method for remote eye-fixation detection, using a polarization-modulated approach to retinal birefringence scanning (RBS), without the need for individual calibration or separate background measurements and essentially independent of corneal birefringence. Polarization-modulated RBS detects polarization changes generated in modulated polarized light passing through a unique pattern of nerve fibers identifying and defining the retinal region where fixation occurs (the fovea). A proof-of-concept demonstration in human eyes suggests that polarization-modulated RBS has the potential to reliably detect true foveal fixation on a specified point with an accuracy of at least ± 0.75°, and that it can be applied to the general population, including individuals with sub-optimal eyes and young children, where early diagnosis of visual problems can be critical. As could be employed in an eye-controlled display or in other devices, polarization-modulated RBS also enables and paves the way for new and reliable eye-fixation-evoked human-machine interfaces.

© 2014 Optical Society of America

OCIS Codes
(120.4570) Instrumentation, measurement, and metrology : Optical design of instruments
(120.4820) Instrumentation, measurement, and metrology : Optical systems
(170.4460) Medical optics and biotechnology : Ophthalmic optics and devices
(170.4470) Medical optics and biotechnology : Ophthalmology
(260.1440) Physical optics : Birefringence
(260.5430) Physical optics : Polarization

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: January 15, 2014
Revised Manuscript: March 14, 2014
Manuscript Accepted: March 16, 2014
Published: March 28, 2014

Virtual Issues
Vol. 9, Iss. 6 Virtual Journal for Biomedical Optics

Kristina Irsch, Boris I. Gramatikov, Yi-Kai Wu, and David L. Guyton, "Improved eye-fixation detection using polarization-modulated retinal birefringence scanning, immune to corneal birefringence," Opt. Express 22, 7972-7988 (2014)

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