Which cranial nerve is associated with vision?

Cranial Nerve II, known as the optic nerve, is specifically dedicated to vision. It is responsible for transmitting visual information from the retina in the eye to the brain, where the interpretation of visual stimuli occurs. The optic nerve carries signals related to light and images, enabling the perception of sight.

This nerve is crucial for various visual functions, including clarity of vision, color differentiation, and visual field perception. Damage to Cranial Nerve II can result in vision loss or disturbances, underscoring its vital role in the overall visual system. In contrast, the other cranial nerves mentioned have different primary functions, such as olfaction, eye movement, and motor functions, but are not directly involved in vision.