1 November 2004 Pediatric Vision Screener 1: instrument design and operation
Author Affiliations +
J. of Biomedical Optics, 9(6), (2004). doi:10.1117/1.1805560
Abstract
We develop the Pediatric Vision Screener (PVS) to automatically detect ocular misalignment (strabismus) and defocus in human subjects. The PVS utilizes binocular retinal birefringence scanning to determine when both eyes are aligned, with a theoretical accuracy of <1 deg. The device employs an autoconjugate, bull's-eye detector-based system to detect focus. The focus and alignment pathways are separated by both wavelength and data acquisition timing. Binocular focus and alignment are detected in rapid alternating sequence, measuring both parameters in both eyes in <0.5 sec. In this work, the theory and design of the PVS are described in detail. With objective, automated measurement of both alignment and focus, the PVS represents a new approach to screening children for treatable eye disease such as amblyopia.
David G. Hunter, Deborah S. Nassif, Nadezhda V. Piskun, Robert S. Winsor, Boris I. Gramatikov, David L. Guyton, "Pediatric Vision Screener 1: instrument design and operation," Journal of Biomedical Optics 9(6), (1 November 2004). http://dx.doi.org/10.1117/1.1805560
JOURNAL ARTICLE
6 PAGES


SHARE
KEYWORDS
Eye

Sensors

Signal detection

Polarization

Control systems

Mirrors

Birefringence

Back to Top