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Anterior uveitis is inflammation of the front part of the uveal tract, involving the iris and often the ciliary body, and it is also called iritis. It commonly causes a painful red eye with photophobia and blurred vision. Inflammation in the anterior chamber can lead to complications such as adhesions of the iris, glaucoma, or cataract if not treated. Because symptoms can escalate quickly, prompt eye evaluation is important.
read more about anterior uveitis ...Many cases are idiopathic, meaning no clear cause is found. Others are linked to autoimmune conditions, infections, injury, or surgery. Clinicians consider systemic associations, especially when episodes recur.
Symptoms typically include deep eye pain, redness that is worse around the cornea, and strong light sensitivity. Vision may be blurry, and the pupil can look smaller or irregular. On slit-lamp exam, clinicians look for inflammatory cells and flare in the anterior chamber and may see keratic precipitates or posterior synechiae. Eye pressure is checked because it can rise or fall depending on the episode and treatment.
Diagnosis is clinical, based on slit-lamp findings and symptom pattern. Testing for underlying causes is individualized and often guided by history, recurrence, laterality, and exam features. Some patients need targeted blood tests or imaging, especially when the uveitis is recurrent, bilateral, or severe. The goal is to identify treatable systemic disease and to avoid missing infection before using steroids.
Treatment commonly includes topical corticosteroid drops to reduce inflammation and cycloplegic drops to relieve pain and help prevent synechiae. Steroids are tapered based on clinical response to reduce rebound inflammation. If an infectious cause is suspected or confirmed, targeted antimicrobial therapy is needed and steroids are used only with specialist guidance. Follow-up is essential to monitor inflammation control and check intraocular pressure during treatment.
Anterior uveitis itself is not contagious. However, some infectious causes that can trigger uveitis require specific treatment and evaluation. Your clinician will determine whether infection testing is needed.
Many acute episodes improve over days to weeks with appropriate therapy, but the timeline depends on severity and cause. Drops are often tapered gradually, not stopped suddenly. Regular follow-up helps confirm the inflammation has resolved.
Yes. Recurrence is common in some patients, especially those with HLA-B27 associated disease or other systemic inflammatory conditions. Identifying and managing underlying triggers can reduce flare frequency.
Seek urgent care for severe pain, rapidly worsening redness, sudden vision loss, or new floaters and flashes. These can signal severe inflammation, high pressure, or posterior involvement. Do not delay evaluation if symptoms escalate.
Iritis. StatPearls Publishing (NCBI Bookshelf). https://www.ncbi.nlm.nih.gov/books/NBK430909/. Date Accessed: February 18, 2026.
Classification Criteria for Spondyloarthritis/HLA-B27-Associated Anterior Uveitis. Standardization of Uveitis Nomenclature (SUN) Working Group. https://pubmed.ncbi.nlm.nih.gov/33845004/. Date Accessed: February 18, 2026.
Classification Criteria for Herpes Simplex Virus Anterior Uveitis. Standardization of Uveitis Nomenclature (SUN) Working Group. https://pubmed.ncbi.nlm.nih.gov/33845009/. Date Accessed: February 18, 2026.
Classification Criteria for Varicella Zoster Virus Anterior Uveitis. Standardization of Uveitis Nomenclature (SUN) Working Group. https://pubmed.ncbi.nlm.nih.gov/33845010/. Date Accessed: February 18, 2026.
Classification Criteria for Cytomegalovirus Anterior Uveitis. Standardization of Uveitis Nomenclature (SUN) Working Group. https://pmc.ncbi.nlm.nih.gov/articles/PMC8501153/.Date Accessed: February 18, 2026.