We previously developed a retinal birefringence scanning (RBS) device to detect eye fixation. The purpose of this study was to determine whether a new binocular RBS (BRBS) instrument can detect simultaneous fixation of both eyes. Control (nonmyopic and myopic) and strabismic subjects were studied by use of BRBS at a fixation distance of 45 cm. Binocularity (the percentage of measurements with bilateral fixation) was determined from the BRBS output. All nonstrabismic subjects with good quality signals had binocularity >75%. Binocularity averaged 5% in four subjects with strabismus (range of 0–20%). BRBS may potentially be used to screen individuals for abnormal eye alignment.
© 2003 Optical Society of America
(070.6020) Fourier optics and signal processing : Continuous optical signal processing
(170.4460) Medical optics and biotechnology : Ophthalmic optics and devices
(170.4470) Medical optics and biotechnology : Ophthalmology
(330.2210) Vision, color, and visual optics : Vision - eye movements
(330.4300) Vision, color, and visual optics : Vision system - noninvasive assessment
David G. Hunter, Ankoor S. Shah, Soma Sau, Deborah Nassif, and David L. Guyton, "Automated Detection of Ocular Alignment with Binocular Retinal Birefringence Scanning," Appl. Opt. 42, 3047-3053 (2003)