ANATOMY

Detailed explanation-1: -The optic nerve: Starts in the optic disk, a group of cells in retinal tissue at the back of your eye. Travels through the optic canal (a bony opening) and enters your skull. Crosses paths with the opposite optic nerve to form an X-shaped structure called the optic chiasm.

Detailed explanation-2: -The optic nerve is a bundle of more than 1 million nerve fibers that carry visual messages. You have one connecting the back of each eye (your retina) to your brain. Damage to an optic nerve can cause vision loss.

Detailed explanation-3: -The optic nerve begins at the optic disk, a structure that is 1.5 mm (0.06 inch) in diameter and is located at the back of the eye.

Detailed explanation-4: -The retina is attached to the optic nerve, a bundle of nerves that connects your eye to your brain.

Detailed explanation-5: -Retina. The light-sensitive nerve layer that lines the inside of the back of the eye. The retina senses light and creates impulses that are sent through the optic nerve to the brain.