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. Optic Nerve (Cranial Nerve II)
• B. Trochlear Nerve (Cranial Nerve IV)
• C. Abducens Nerve (Cranial Nerve VI)
• D. Oculomotor Nerve (Cranial Nerve III)

Answer: (A)

Visual information from the retina is carried to the brain by the optic nerve, the second cranial nerve. It is a sensory pathway built from retinal ganglion cell axons that transmit signals from photoreceptors, crossing at the optic chiasm and continuing through the optic tract to the lateral geniculate nucleus and onward to the primary visual cortex. The other nerves listed are involved in moving the eye or adjusting the pupil and lens; they are motor pathways and do not carry visual signals from the retina. Therefore, the optic nerve is the one that transmits visual information to the brain.

Visual information from the retina is carried to the brain by the optic nerve, the second cranial nerve. It is a sensory pathway built from retinal ganglion cell axons that transmit signals from photoreceptors, crossing at the optic chiasm and continuing through the optic tract to the lateral geniculate nucleus and onward to the primary visual cortex. The other nerves listed are involved in moving the eye or adjusting the pupil and lens; they are motor pathways and do not carry visual signals from the retina. Therefore, the optic nerve is the one that transmits visual information to the brain.