In the field of ophthalmology there are few conditions so devastating. Which have been mentioned as a true emergency. Among them is central retinal artery occlusion (CRAO) which potentially can lead to near total and irreversible blindness. This phenomenon which is due to decreased perfusion pressure in the region of the inner retinal circulation results in a sudden loss of retinal sensory function. Most of the patients refer after several hours from onset of visual loss and at that time there is very low chance for recovery of vision. Arteriosclerosis, arterial hypertension, carotid occlusive disease and valvular heart disorders are the most common systemic conditions which may predispose to this disease. There are many other reported disease entities which have been associated with central retinal artery occlusion. In this case report a young man is presented with acute CRVO following a snake envenomation.