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What is the tough white protective tissue in the eye?

What is the tough white protective tissue in the eye?

The sclera is the tough, opaque tissue that serves as the eye’s protective outer layer. It is also known as the “white of the eye.”

What is the White superficial layer of the eye?

The sclera covers nearly the entire surface of the eyeball. With its external surface being white-coloured, it is commonly known as the “white of the eye”. The sclera provides attachments for the muscles that control the eye’s movement (see above).

What is the white part in your eye called?

Sclera. The white visible portion of the eyeball. The muscles that move the eyeball are attached to the sclera.

What is the outer corner of your eye called?

Canthus (pl. canthi, palpebral commissures) is either corner of the eye where the upper and lower eyelids meet. More specifically, the inner and outer canthi are, respectively, the medial and lateral ends/angles of the palpebral fissure.

What are Zonules in the eye?

Ciliary zonules are a ring of fibrous structures anchoring the ciliary body with the lens of the eye. These are the structures that help to maintain the position of the lens in the optical path, and anchor muscles that change the shape of the lens to alter focus.

Why is the sclera tough?

The tough, fibrous nature of the sclera also protects the eye from serious damage — such as laceration or rupture — from external trauma. The sclera also provides a sturdy attachment for the extraocular muscles that control the movement of the eyes.

What makes up the white layer of the eye?

Tough outer ‘white’ of the eye , composed of though fibrous tissue Cornea Transparent part of the sclera; ‘window’ of the eyeball Choroid Middle layer contains blood vessels and is pigmented to prevent scattering of light Iris Front part of the choroid; colored part of the eye Ciliary muscle

What is the outer coat of the eye called?

pl. sclerae [L.] the tough, usually white, outer coat of the eyeball, covering all the posterior surface and continuous anteriorly with the cornea. The stroma is banded by loose connective tissue, the lamina fusca internally and episclera externally. sclera inflammation. see scleritis.

Is the sclera the middle layer of the eye?

The slight bulge in the sclera at the front of the eye is a clear, thin, dome-shaped tissue called the cornea. The middle layer is the choroid.

What does it mean when your eyeball is white?

[skle´rah] (L.) the tough, white outer coat of the eyeball, covering approximately the posterior five-sixths of its surface, continuous anteriorly with the cornea and posteriorly with the external sheath of the optic nerve. adj., adj scle´ral. The sclera and other eye structures.