The iris is the colored part of the eye. Its muscular fibers allow the pupil, the opening through which light enters the eye, to change size. When iritis occurs, there is inflammation of the iris and the tissues that support it.
Causes of Iritis
Iritis is an inflammation of the eye causes by infection, trauma or unknown causes. Infections that spreads to the eye from other body parts include toxoplasmosis, tuberculosis, histoplasmosis, syphilis, sarcoidosis, and viruses. Injury to the eye may involve the iris, leading to traumatic iritis. An autoimmune reaction may also probably produce this disorder.
Signs and Symptoms of Iritis
Symptoms of iritis of sudden onset include severe eye pain and photophobia, or increased sensitivity to light. Redness of the involved eye develops. The eye which is involved with the inflammation will often have a slightly smaller pupil than the normal eye. Excessive tearing and blurred vision occurs. Symptoms of iritis that develops gradually also include eye pain and photophobia. In addition to blurred vision, there may be complaints of floating spots within the field of vision.
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Medical Content Last Updated on 07/12/2008
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