28 July 1994 Fiber optics for perimetry based on video oculography
Author Affiliations +
Proceedings Volume 2131, Biomedical Fiber Optic Instrumentation; (1994) https://doi.org/10.1117/12.180710
Event: OE/LASE '94, 1994, Los Angeles, CA, United States
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.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ernesto Suaste-Gomez, Laura Solis Landaverde, and Palmira Rivera Arzola "Fiber optics for perimetry based on video oculography", Proc. SPIE 2131, Biomedical Fiber Optic Instrumentation, (28 July 1994); doi: 10.1117/12.180710; https://doi.org/10.1117/12.180710
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