Overview of Uveitis The uvea is that portion of the eye that contains the iris, the ciliary body and the choroid. The iris is the colored portion of the eye that allows for controlling the size of the pupil, the opening through which light enters the eye. The ciliary body is a muscle located behind the iris that helps change the shape of the lens to focus light on the retina. The choroid is a layer of the eyeball containing blood vessels.Uveitis, an inflammation of the uvea, may be in the front of the eye, principally involving the iris and ciliary body or in the back of they eye, affecting primarily the choroid.Anterior uveitis is the most common. It usually lasts only a few days, however, it is prone to recur. Posterior uveitis, may last for months or years. It is also associated with damage to the retina. Either condition can lead to visual loss and complications including glaucoma, retinal detachment and cataracts.This disorder most commonly is seen in young adults.
Causes of Uveitis The cause of uveitis is unknown. It may represent an autoimmune response. This is particularly suggestive in other autoimmune diseases that have uveitis as one of their symptoms. These include rheumatoid arthritis, ankylosing spondylitis, Crohn's disease, sarcoidosis and Ulcerative colitis.
Signs and Symptoms of Uveitis Increased sensitivity to light and blurred vision occur. Pain in the affected eye can become very severe. The eye commonly will appear red with copious tearing. The individual may experience spots in their vision. Occasionally the pupil will appear irregular.