WHAT IS IT?
Sclera
The sclera, simply put, is the white of your eyes. It forms about 80% of the surface area of the eyeball, extending from the cornea all the way to the optic nerve, which exits the back of the eye.
Only a small portion of the sclera is visible. The thickness of this tissue ranges from 0.3mm to 1mm.
It is composed of small fibres of collagen that are arranged in irregular bundles.
The random arrangement and interweaving of these connective tissue fibres are what account for the strength and flexibility of the eyeball.