What is the sclera? The sclera is the white part of your eye. It’s a protective covering that wraps over most of your eyeball. It extends from the cornea at the front of your eye to the optic nerve in the back.

In humans, and some other vertebrates, the whole sclera is white or pale, contrasting with the coloured iris. The sclera forms the posterior five-sixths of the connective tissue coat of the human eyeball.

Oct 10, 2024 · The sclera is commonly known as the white of the eye. It’s the opaque tissue that surrounds your entire eyeball, except for the clear cornea (the covering in the front of your eye).

Jan 31, 2026 · The sclera is the opaque, tough tissue that comprises the white of your eye, while the cornea is the transparent covering at the front of the eye that allows light into the eye.

Forming around 85% of the outer tunic of the human eyeball, the sclera is a remarkably resilient and structurally complex connective tissue that performs multiple functions critical to vision.

May 24, 2023 · What Does the Sclera Do? The sclera is designed to support the eyeball, protect it from injury and maintain its shape. Clear mucus membranes cover the sclera, which are called …

The sclera is the white, opaque outer layer of the eye that provides structural support and protection. Composed mainly of collagen and elastic fibers, the sclera is tough and durable, forming the majority …

Aug 13, 2025 · The sclera is the white outer coating of the eye. It is tough, fibrous tissue that extends from the cornea (the clear front section of the eye) to the optic nerve at the back of the eye.

The sclera, the tough protective outer shell of the eyeball, is composed of dense fibrous tissue that covers four-fifths of the eyeball and provides attachments for the muscles that move the eye.

Discover the structure, function, and key features of the sclera, the white outer layer of the eyeball.