The episclera is the outermost layer of the scleraCassin, B. and Solomon, S. Dictionary of Eye Terminology. Gainsville, Florida: Triad Publishing Company, 1990.. It is composed of loose, fibrous, elastic tissue and attaches to Tenon's capsule.

In episcleritis, the episclera and Tenon's capsule are infiltrated with inflammatory cells Heath, G. "The episclera, sclera and conjunctiva: An overview of relevant ocular anatomy." OT. February 10, 2006..

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