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Proceedings Paper

An improved apparatus of infrared videopupillography for monitoring pupil size
Author(s): T. -W. Huang; M. -L. Ko; Y. Ouyang; Y. -Y. Chen; B. -S. Sone; M. Ou-Yang; J. -C. Chiou
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Paper Abstract

The intraocular pressure (IOP) that can diagnose or track glaucoma generally because it is one of the physiology parameters that are associated with glaucoma. But IOP is not easy and consistence to be measured under different measure conditions. Besides, diabetes is associated with diabetic autonomic neuropathy (DAN). Pupil size response might provide an indirect means about neuronal pathways, so the abnormal pupil size may relate with DAN. Hence an infrared videopupillography is needed for tracking glaucoma and exploring the relation between pupil size and DAN. Our previous research proposed an infrared videopupillography to monitoring the pupil size of different light stimulus in dark room. And this portable infrared videopupillography contains a camera, a beam splitter, the visible-light LEDs for stimulating the eyes, and the infrared LEDs for lighting the eyes. It can be mounted on any eyeglass frame. But it can modulate only two dimensions, we cannot zoom in/out the eyes. Moreover, the eye diameter curves were not smooth and jagged because of the light spots, lone eyelashes, and blink. Therefore, we redesign the optical path of our device to have three dimension modulation. Then we can zoom in the eye to increase the eye resolution and to avoid the LED light spots. The light spot could be solved by defining the distance between IR LED and CCD. This device smaller volume and less prices of our previous videopupillography. We hope this new infrared videopupillography proposed in this paper can achieving early detection about autonomic neuropathy in the future.

Paper Details

Date Published: 7 October 2014
PDF: 7 pages
Proc. SPIE 9220, Infrared Sensors, Devices, and Applications IV, 92200T (7 October 2014); doi: 10.1117/12.2062059
Show Author Affiliations
T. -W. Huang, National Chiao Tung Univ. (Taiwan)
M. -L. Ko, National Chiao Tung Univ. (Taiwan)
National Taiwan Univ. Hospital, Hsin-Chu Branch (Taiwan)
Y. Ouyang, Chang Gung Univ. (Taiwan)
Y. -Y. Chen, National Chiao Tung Univ. (Taiwan)
B. -S. Sone, National Chiao Tung Univ. (Taiwan)
M. Ou-Yang, National Chiao Tung Univ. (Taiwan)
J. -C. Chiou, National Chiao Tung Univ. (Taiwan)

Published in SPIE Proceedings Vol. 9220:
Infrared Sensors, Devices, and Applications IV
Paul D. LeVan; Ashok K. Sood; Priyalal Wijewarnasuriya; Arvind I. D'Souza, Editor(s)

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