A wearable infrared videopupillography with multi-stimulation of consistent illumination for binocular pupil response

Yang-Mang Ou, Mei Lan Ko, Yi Chun Tsai, Jin-Chern Chiou, Ting Wei Huang*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The pupil response to light can reflect various kinds of diseases which are related to physiological health. Pupillary abnormalities may be influenced on people by autonomic neuropathy, glaucoma, diabetes, genetic diseases, and high myopia. In the early stage of neuropathy, it is often asymptomatic and difficulty detectable by ophthalmologists. In addition, the position of injured nerve can lead to unsynchronized pupil response for human eyes. In our study, we design the pupilometer to measure the binocular pupil response simultaneously. It uses the different wavelength of LEDs such as white, red, green and blue light to stimulate the pupil and record the process. Therefore, the pupilometer mainly contains two systems. One is the image acquisition system, it use the two cameras modules with the same external triggered signal to capture the images of the pupil simultaneously. The other one is the illumination system. It use the boost converter ICs and LED driver ICs to supply the constant current for LED to maintain the consistent luminance in each experiments for reduced experimental error. Furthermore, the four infrared LEDs are arranged nearby the stimulating LEDs to illuminate eyes and increase contrast of image for image processing. In our design, we success to implement the function of synchronized image acquisition with the sample speed in 30 fps and the stable illumination system for precise measurement of experiment.

Original languageEnglish
Title of host publicationDesign and Quality for Biomedical Technologies IX
EditorsRongguang Liang, Ramesh Raghavachari
PublisherSPIE
ISBN (Electronic)9781628419344
DOIs
StatePublished - 1 Jan 2016
EventDesign and Quality for Biomedical Technologies IX - San Francisco, United States
Duration: 13 Feb 201614 Feb 2016

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume9700
ISSN (Print)1605-7422

Conference

ConferenceDesign and Quality for Biomedical Technologies IX
CountryUnited States
CitySan Francisco
Period13/02/1614/02/16

Keywords

  • binocular pupil response
  • infrared
  • videopupillography
  • Wearable

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