Kõvakesta
Kõvakesta is the Estonian word for the sclera, the tough, white outer layer of the eyeball. It is primarily composed of dense connective tissue, largely collagen, which provides structural integrity and protection to the delicate inner components of the eye. The sclera is continuous with the cornea at the front of the eye and the optic nerve sheath at the back. Its opaque nature gives the eye its characteristic white appearance, although variations in pigment can occur.
The primary functions of the sclera include maintaining the shape of the eyeball, protecting it from external
In some medical contexts, the sclera can be involved in various conditions. Scleritis, for instance, is an