The signs, symptoms and characteristics of uveitis include:
- Eye redness
- Eye pain
- Light sensitivity
- Blurred vision
- Dark, floating spots in your field of vision (floaters)
- Decreased vision
- Whitish area (hypopyon) inside the eye in front of the lower part of the colored area of the eye (iris)
The site of uveitis varies and is described by where in the eye it occurs.
- Anterior uveitis affects the front of your eye (also called iritis).
- Posterior uveitis affects the back of your eye (also called choroiditis).
- Intermediary uveitis affects the ciliary body (also called cyclitis).
- Panuveitis occurs when all layers of the uvea are inflamed.
In any of these conditions, the jelly-like material in the center of your eye (vitreous) can also become inflamed and infiltrated with inflammatory cells.
Symptoms may occur suddenly and get worse quickly, though in some cases, symptoms develop gradually. Symptoms may be noticeable in one or both eyes.
When to see a doctor
Contact your doctor if you think you may have symptoms of uveitis. Your doctor may refer you to an eye specialist (ophthalmologist). If you're having significant eye pain and new vision problems, seek prompt medical attention.
Sometimes, the specific cause of uveitis isn't clear. However, in some people, uveitis is associated with:
- Autoimmune disorders, such as Behcet's disease, sarcoidosis or ankylosing spondylitis
- Inflammatory disorders, such as Crohn's disease or ulcerative colitis
- Infections such as cat-scratch disease, herpes, syphilis, toxoplasmosis, tuberculosis or West Nile virus
- Eye injury
- Certain cancers, such as lymphoma, that can directly or indirectly affect the eye
Possible risk factors for uveitis include:
- A genetic predisposition. People with changes in certain genes may be more likely to develop uveitis.
- Having an infection. A number of infections, such as toxoplasmosis, cat-scratch fever, tuberculosis, herpes, syphilis and West Nile virus, can increase the risk of uveitis.
- Having an autoimmune or inflammatory disorder. Conditions that increase the chance of uveitis include Behcet's disease, ankylosing spondylitis, sarcoidosis, psoriatic arthritis, Crohn's disease and ulcerative colitis.
- A history of eye injury. Trauma to the eye can cause uveitis. It's even possible for uveitis to develop in the eye that wasn't injured.
Left untreated, uveitis can cause the following complications:
- Abnormally high pressure inside the eye (glaucoma)
- Damage to the optic nerve
- Clouding of the lens (cataract) or cornea
- Retinal problems, such as fluid within the retina or retinal detachment
- Vision loss