Sclera

The sclera is the white outer coating of the eye made of tough fibrin connective tissue which gives the eye its shape and helps to protect the delicate inner parts.

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In children, it is thinner and shows some of the inlying blueness. There are some diseases like scleritis that cause some blindness. It appears that these diseases produce a dark vertical line through the eye sight which avoids the 100% of visibility.

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Eye: : This article refers to the sight organ. See Eye (disambiguation) for other usages....

Fibrin: Fibrin is a protein involved in the clotting of blood. It is a fibrillar protein that is polymerised to form a "mesh" that forms a haemostatic plug or clot (in conjunction with platelets) over a wound site....

Connective tissue: Connective tissue is any type of biological tissue with an extensive extracellular matrix and often serves to support, bind together, and protect organs. There are four basic types:...