Uveitis means inflammation of the uvea, or the middle layer of the eye. The uvea consists of three structures: the iris, the ciliary body, and the choroid. Inflammation occurring in any of these three structures is termed "uveitis."
Inflammation in uveitis may involve any but not necessarily all of these three structures. Depending upon which structures are inflamed, uveitis may be further categorized into one of three main diagnoses:
Uveitis may develop following eye trauma or surgery, in association with diseases that affect other organs in the body, or may be a condition isolated to the eye itself. Uveitis often results from infectious causes. Common conditions associated with uveitis include:
In uveitis, different combinations of these symptoms may be present, depending on which part of the eye is inflamed, including:
These symptoms also can be a sign of other eye problems.