Iritis is a painful inflammation of the iris of the eye, the circular membrane giving the eye its color and containing the pupil, explains WebMD. While blunt trauma and certain conditions and infections may cause the condition, it may also be linked to genetic factors, according to Mayo Clinic.
Iritis typically develops quickly and most often affects only one eye. Symptoms include pain in the eye or brow region, worsened eye pain during bright light exposure, redness in the eye, a small or abnormally shaped pupil, blurred vision and headache. Patients experiencing persistent eye pain, blurred vision and redness should seek medical attention immediately, advises WebMD. Steroid and dilating eyedrops are the most common treatments for decreasing pain and inflammation, notes Mayo Clinic.