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Appl Opt. 2003 Jun 1;42(16):3047-53.

Automated detection of ocular alignment with binocular retinal birefringence scanning.

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  • 1Zanvyl Krieger Children's Eye Center at the Wilmer Institute, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA.


We previously developed a retinal birefingence 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.

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