Which cranial nerve carries visual information from the retina to the brain?

Which cranial nerve carries visual information from the retina to the brain?

• A. Cranial nerve III
• B. Cranial nerve II
• C. Cranial nerve V
• D. Cranial nerve VII

Answer: (B)

Visual signals from the retina travel along the optic nerve, which is the second cranial nerve. This purely sensory nerve carries information about light and images toward the brain, where it is relayed from the optic chiasm to the lateral geniculate nucleus and then to the primary visual cortex in the occipital lobe. The other nerves listed have unrelated roles: the oculomotor nerve governs most eye movements and pupil constriction; the trigeminal nerve provides facial sensation and motor functions like chewing; the facial nerve controls facial muscles and some taste. So the nerve that carries visual information from the retina to the brain is the one known for vision—the optic nerve.

Visual signals from the retina travel along the optic nerve, which is the second cranial nerve. This purely sensory nerve carries information about light and images toward the brain, where it is relayed from the optic chiasm to the lateral geniculate nucleus and then to the primary visual cortex in the occipital lobe. The other nerves listed have unrelated roles: the oculomotor nerve governs most eye movements and pupil constriction; the trigeminal nerve provides facial sensation and motor functions like chewing; the facial nerve controls facial muscles and some taste. So the nerve that carries visual information from the retina to the brain is the one known for vision—the optic nerve.