THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -Optic. Fibers arise from the retina of the eye and form the optic nerve; its function is purely sensory, and carries impulses for vision.

Detailed explanation-2: -The ophthalmic nerve is the smallest division, purely sensory, and supplies sensation to the forehead, eyeball, lacrimal glands, upper eyelids, frontal sinuses, and the side of the nose.

Detailed explanation-3: -optic nerve, second cranial nerve, which carries sensory nerve impulses from the more than one million ganglion cells of the retina toward the visual centres in the brain. The vast majority of optic nerve fibres convey information regarding central vision.