Uveitis is an inflammation of the uvea (the middle layer of the eye). The uvea does consist of the iris, choroid and ciliary body. The choroid is sandwiched between the retina and the white of the eye (sclera), and it provides blood flow to the deep layers of the retina. The most common type of uveitis is an inflammation of the iris called iritis (anterior uveitis).
Infections, injury and autoimmune disorders may be associated with the development of uveitis, though the exact cause is often unknown.
Uveitis can be serious, leading to permanent vision loss. Early diagnosis and treatment are important to prevent the complications of uveitis.