
Keywords: اینترفرون آلفا pegylated; Toxic optical neuropathy; Pegylated interferon alpha; Chronic hepatitis due to VHC; Prolonged latency; Evoked visual potentials; NeuropatÃa óptica tóxica; Interferón alfa pegilado; Hepatitis crónica por VHC; Latencia prolongada; Potenciales evocados