Iritis: Symptoms & Signs

Medically Reviewed on 7/30/2021

Iritis refers to inflammation of the iris of the eye. The iris is the colored portion of the eye surrounding the pupil.

Symptoms of iritis vary in severity among affected people and can include

It usually occurs in one eye, but with some underlying conditions, it may affect both eyes. In rare cases, iritis can progress to loss of vision.

Causes of iritis

There are many known causes of iritis, but in many cases, the exact cause is not known. Causes of iritis include autoimmune conditions, trauma or injury to the eye, infectious diseases including herpesvirus infections of the eye, inflammation after eye surgery, sarcoidosis, and certain conditions including inflammatory bowel disease.

Other iritis symptoms and signs

  • Excessive Tearing
  • Eye Pain
  • Redness of the Affected Eye
  • Sensitivity to Light


Pink Eye (Conjunctivitis) Symptoms, Causes, Treatments See Slideshow

Subscribe to MedicineNet's General Health Newsletter

By clicking Submit, I agree to the MedicineNet's Terms & Conditions & Privacy Policy and understand that I may opt out of MedicineNet's subscriptions at any time.

Jameson, J. Larry, et al. Harrison's Principles of Internal Medicine, 20th Ed. New York: McGraw-Hill Education, 2018.