Iritis refers to inflammation of the iris of the eye.

Signs and symptoms

• Pain
• Photophobia
• Blurred vision
• Conjunctival injection
• Anterior chamber cells and flare

Complications

cataract, glaucoma, corneal calcification

Also see

People with ankylosing spondylitis are prone to iritis and other forms of anterior uveitis.

The American Optometric Association Clinical Practice Guidelines - Care of the Patient with Anterior Uveitis (CPG7) says

Description and Classification of Anterior Uveitis

Uveitis is an inflammation of the uveal tract which consists of the choroid, the ciliary body, and the iris. It may be classified as anterior, intermediate (pars planitis), or posterior (choroiditis) uveitis. Anterior uveitis involves the anterior portion of the uvea (i.e., the iris and ciliary body). "Iritis" refers to an inflammation of the iris only, while "iridocyclitis" involves both the iris and the ciliary body. However, the terms anterior uveitis, iritis, and iridocyclitis are often used synonymously. Anterior uveitis is termed "acute" when the inflammation lasts less than 6 weeks or "chronic" when it lasts longer.

References

• Care of the Patient with Anterior Uveitis (CPG7) (PDF)
• Iritis Organization
• Assessment of the Red Eye - Iritis