"optic nerve." YourDictionary, n.d. Web. 13 November 2018. <https://www.yourdictionary.com/optic-nerve>.
optic nerve. (n.d.). Retrieved November 13th, 2018, from https://www.yourdictionary.com/optic-nerve
Either of the second pair of cranial nerves, which carry sensory information relating to vision from the retina of the eye to the brain. Disease or injury of the optic nerve can result in partial or total blindness.