The Sclera reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Sclera

The sclera is the white part of the eye. It is made of tough fibrin connective tissue. Both humans and horses have sclera in the eyes.

An old wives tale claims that horses with sclera are mentally challenged.

Some horses do not have the sclera.

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