CRANIAL NERVES 1 / 2
Cranial nerve 1 is the Olfactory ( smell). Cranial nerve 2 is the Optic ( vision). What is hemianopia? Hemianopia is a loss of vision (blindness) in half of the visual field. This may occur in one or both eyes. What causes hemianopia? Trauma, tumors, and strokes may cause this condition.