TY JOUR TI Visual evoked potentials in veterinary ophthalmology: literature review KW visual evoked potentials KW electroretinography KW electrophysiology KW dog KW cat KW retina KW optic pathway KW optic nerve KW blindness JO Russian veterinary journal AU Mironovich, A.O. AU Boyarinov, S.A. PY 2019 IS 2019 PB Publishing house "Logos Press"