Daniel Robles Camarillo, Luis Ni-o de Rivera, Ernesto Paredes Mart-nez, Hugo Quiroz Mercado, Jessica L-pez Miranda

The present work proposes an electronic waveform generator for transcorneal electrical stimulation (TES). The applied waveform model is generated on a digital processor by means of an adaptive finite impulse response (FIR) filter, which output waveform is synthesized from the original waveform registered from a multi-focal electroretinograph (MF-ERG). The stimulation waveform applied in patients with central retinal artery occlusion (CRAO) in this procedure, is qualitatively different from the one reported by others like Tano et al [1, 2]. Results show that the waveform proposed is like the one measured by the MF-ERG. CRAO Patients stimulated with the proposed wavform reported phosphenes associated with variations of the filter coefficients.