Uveitis is a term used to describe a group of diseases that cause inflammation inside the eye, specifically in the middle layer of tissue in the eye wall called the uvea. The uvea consists of the iris, the ciliary body, and the choroid. Uveitis can affect one or both eyes and can cause symptoms such as eye pain, redness, light sensitivity, and vision loss. There are three types of uveitis based on which part of the uvea is affected: anterior uveitis, intermediate uveitis, and posterior uveitis.

Anterior uveitis affects the inside of the front of the eye (between the cornea and the iris) and the ciliary body. It is also called iritis and is the most common type of uveitis. Intermediate uveitis affects the retina and blood vessels just behind the lens (pars plana) as well as the gel in the center of the eye (vitreous) . Posterior uveitis affects a layer on the inside of the back of the eye, either the retina or the choroid.

Uveitis can be caused by a variety of factors, including eye injury or surgery, infection, autoimmune or inflammatory disorders that affect other parts of the body, and sometimes the cause is unknown. Uveitis can lead to severe eye problems, including blindness, if not treated promptly. Treatment for uveitis aims to relieve pain, prevent vision loss from inflammation and complications of uveitis, and treat the underlying cause if known. Eye doctors may prescribe eye drops, oral medications, or injections to treat uveitis[[1]](https://www.mayoclinic.org/diseases-conditions/uvei...