Sclera

Definition

The sclera is the dense, fibrous, white outer layer of the eyeball that provides structural support and protection. It extends from the cornea to the optic nerve at the back of the eye.

Related terms

Cornea:

The transparent front part of the eye that covers the iris, pupil, and anterior chamber, contributing to the eye's ability to focus light.

Optic nerve: A bundle of more than a million nerve fibers that transmits visual information from the retina to the brain.

Retina:

The light-sensitive layer at the back of the eye that converts light into neural signals for visual recognition in the brain