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Telecommunications and Radio Engineering
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ISSN Print: 0040-2508
ISSN Online: 1943-6009

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Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v69.i8.90
pages 727-732

EFFECTS OF WAVELETS TRANSCORNEAL-STIMULATION ON LOW VISION PATIENTS WITH CENTRAL RETINAL ARTERY OCCLUSION CRAO

D. Robles-Camarillo
National Polytechnic Institute of Mexico (IPN), ESIME-UPC, Mexico
Luis Nino-de-Rivera
National Polytechnic Institute of Mexico (IPN), National Institute for Astrophysics, Optic & Electronics, Puebla, Mexico
Wilfredo Calleja-Arriaga
INAOE National Institute of Astrophysics, Optics and Electronics of Mexico. Tonanzintla, Puebla, Mexico
H. Quiroz-Mercado
Denver Health Medical Center-University of Colorado. Denver, CO., USA
M. J. Lopez-Miranda
Hospital "Luis Sanchez Bunes" Retina Department Mexico-City, Mexico

ABSTRACT

The present work presents the effect of wavelets waveforms electrical stimulation applied on low vision (LV) patients suffering central retinal artery occlusion CRAO. Stimulations is done via transcorneal electrical stimulation (TES) by means of an adaptive wavelets system generator. The applied waveform signal is generated into a digital processor, and is based on a healthy eye’s multi-focal wavelet signal obtained from electroretinography (MF-ERG) response of healthy people. The stimulation protocol proposed in this paper is qualitatively different from others, like Inomata et. al. [1,2] that uses square bipolar signals. All stimulated patients improve at least one line in Fainbloom’s visual acuity exams scale. Results are correlated with an important increased in the electrical A and B wave response in standard electroretinography and with subjective patient’s visual acuity confirmed by the fact all stimulated patients improve at least one line in Fainbloom’s scale at least, in visual acuity exams.


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