which cranial nerve moves the eye
If one of the 2nd cranial nerves (optic nerve) is damaged, the affected eye is blind. If any of the three cranial nerves that control eye movement (3rd, 4th, or 6th cranial nerve) is damaged, people cannot move their eyes normally. Symptoms include double vision when looking in certain directions. If the 3rd cranial nerve (oculomotor nerve) is paralyzed, the upper eyelid is paralyzed.