Title :
VEP associated with pupillary responses for objective evaluation of the visual field
Author :
García, N. ; Villamar, L. ; Suaste, E.
Author_Institution :
Dept. of Electr. Eng., Centro de Investigacion y de Estudios Avanzados, Mexico City, Mexico
Abstract :
This paper describes the design of an instrument for the functional and objective evaluation of the visual field, as well as an ophthalmologic methodology based on a video-oculography system (VOG). This objective evaluation methodology is carried out using the visual evoked potentials (VEP) and the pupillary response (PR). The system sustains its objectivity in the digital processing of the PR recorded by the VOG system during the test caused by the photomotor reflex, and in the analysis of the VEP. The analysis of the PR digitalized and the VEP recorded, give us an idea of the visual condition of the observer, without involve the dependence of their perception.
Keywords :
biomedical equipment; eye; medical signal processing; neurophysiology; visual evoked potentials; digital processing; ophthalmologic methodology; photomotor reflex; pupillary response; video-oculography system; visual condition; visual evoked potential; Charge coupled devices; Charge-coupled image sensors; Cost accounting; Electrodes; Electroencephalography; Lesions; Optical fibers; Optical recording; Stimulated emission; Testing;
Conference_Titel :
Engineering in Medicine and Biology Society, 2003. Proceedings of the 25th Annual International Conference of the IEEE
Print_ISBN :
0-7803-7789-3
DOI :
10.1109/IEMBS.2003.1280820
