Which nerve transmits visual information from the retina to the brain?

• A. Ciliary nerve
• B. Optic nerve
• C. Trigeminal nerve
• D. Oculomotor nerve

Answer: (B)

Visual information from the retina travels along the optic nerve. This bundle is made up of the axons of retinal ganglion cells and serves as the main conduit carrying signals from the eye to the brain. After exiting the eye, these signals reach the thalamus’s lateral geniculate nucleus and then are relayed to the visual cortex for processing. The other nerves listed have different roles: the ciliary nerves carry parasympathetic fibers to the pupil and lens, the trigeminal nerve handles facial sensation and chewing motor function, and the oculomotor nerve controls most eye movements and pupil constriction but does not carry visual signals from the retina.