Mathematical modeling of retinal birefringence scanning

David G. Hunter, Julie C. Sandruck, Soma Sau, Saurabh N. Patel, David L. Guyton

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


Retinal birefringence scanning (RBS) is a new technique that is used to detect the fixation of the eye remotely and noninvasively. The method is based on analysis of polarization changes induced by the retina. In this study, the principles of RBS were mathematically modeled to facilitate a better understanding of the origins of the signals obtained. Stokes vector analysis and Mueller matrix multiplication were augmented with Poincare ´ sphere representation. The cornea was modeled as a linear retarder. The foveal area was modeled as a radially symmetric birefringent medium. The model accurately predicted the frequency and phase of RBS signals obtained during central and paracentral fixation. The signal that indicates central fixation during RBS likely results from a combination of the radial birefringence of the Henle fibers and the overlying corneal birefringence.

Original languageEnglish (US)
Pages (from-to)2103-2111
Number of pages9
JournalJournal of the Optical Society of America A: Optics and Image Science, and Vision
Issue number9
StatePublished - Sep 1999

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Computer Vision and Pattern Recognition


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