It is a cranial nerve.
Optic refers to sight and light. Auditory refers to sound and noise. Now guess.
it carries visual information from the eye to the brain
An optic nerve can do many things, but in general it basically conrtols the signals to and from the brain from the eyes.
i dont know i thought this was an answer. :( sad face :(
Glaucoma Risk Factors
Glaucoma Treatments
Understanding Glaucoma
Glaucoma Symptoms