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Proceedings Paper

Fiber optics for perimetry based on video oculography
Author(s): Ernesto Suaste-Gomez; Laura Solis Landaverde; Palmira Rivera Arzola
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Paper Abstract

We have been working with the association of two techniques -- the static perimetry and the video-oculography -- to obtain automatic and objective determinations of dynamic pupillary reflexes in both eyes to measure the visual fields. For the static perimetry we designed and developed an instrument based on a fiber optic-projection target using a plastic fiber optic like light guide. By means of a rotary mechanical-optical device (step motor), controlled by a PC interface, we select the proximal end of one of 200 plastic fiber optics; we adhere all distal extremes on a translucent-material hemisphere; we assure the projection of localized and constant area light stimulus. We controlled the light intensity and stimulus duration. We employed a calibrated light source capable of providing 358 lux light intensity. In color perimetry results we provided the use of color filters controlled by small electro-mechanical gates. For the video-oculography the eye image is captured by a closed circuit TV camera on line. At the same time the image of the pupil is recorded in a VCR to analyze the pupillary reflexes with a computer system and image processing.

Paper Details

Date Published: 28 July 1994
PDF: 10 pages
Proc. SPIE 2131, Biomedical Fiber Optic Instrumentation, (28 July 1994); doi: 10.1117/12.180710
Show Author Affiliations
Ernesto Suaste-Gomez, CINVESTAV-IPN (Mexico)
Laura Solis Landaverde, CINVESTAV-IPN (Mexico)
Palmira Rivera Arzola, CINVESTAV-IPN (Mexico)


Published in SPIE Proceedings Vol. 2131:
Biomedical Fiber Optic Instrumentation
James A. Harrington; David M. Harris; Abraham Katzir; Fred P. Milanovich, Editor(s)

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