Related Experiment Video
Updated: May 31, 2026
Corneal Confocal Microscopy: A Novel Non-invasive Technique to Quantify Small Fibre Pathology in Peripheral Neuropathies
Published on: January 3, 2011
Modeling and minimizing interference from corneal birefringence in retinal birefringence scanning for foveal fixation
Kristina Irsch1, Boris Gramatikov, Yi-Kai Wu
1The Wilmer Ophthalmological Institute, The Johns Hopkins University School of Medicine, Wilmer 233, The Johns Hopkins Hospital, 600 N. Wolfe Street, Baltimore, MD 21287-9028, USA.
Abstract:
Utilizing the measured corneal birefringence from a data set of 150 eyes of 75 human subjects, an algorithm and related computer program, based on Müller-Stokes matrix calculus, were developed in MATLAB for assessing the influence of corneal birefringence on retinal birefringence scanning (RBS) and for converging upon an optical/mechanical design using wave plates ("wave-plate-enhanced RBS") that allows foveal fixation detection essentially independently of corneal birefringence. The RBS computer model, and in particular the optimization algorithm, were verified with experimental human data using an available monocular RBS-based eye fixation monitor. Fixation detection using wave-plate-enhanced RBS is adaptable to less cooperative subjects, including young children at risk for developing amblyopia.
