What is Autoimmune Uveitis?
Autoimmune uveitis is an inflammatory condition that affects the uvea, the middle layer of the eye, which includes the iris, ciliary body, and choroid. It occurs when the body’s immune system mistakenly attacks its own eye tissues, leading to inflammation and damage.
What Causes Autoimmune Uveitis?
The exact cause of autoimmune uveitis is still unclear. However, it is often associated with autoimmune/inflammatory disorders, such as ankylosing spondylitis, rheumatoid arthritis, psoriasis or psoriatic arthritis, sarcoidosis, and systemic lupus erythematosus (SLE). Other lesser-known causes include eye injury or surgery, medication side effects, bacterial or viral infections such as shingles, syphilis, HIV, toxoplasmosis, or tuberculosis and, rarely, cancer that affects the eye, such as lymphoma.
What are the Risk Factors for Autoimmune Uveitis?
The common risk factors that increase your chance of developing autoimmune uveitis include the following:
- Genetic predisposition (presence of certain genes like HLA-B27)
- Infections
- Smoking
- Female gender (uveitis is more common in women than men)
- Underlying diseases like autoimmune disorders
What are the Signs and Symptoms of Autoimmune Uveitis?
Signs and symptoms of autoimmune uveitis include the following:
- Eye redness and pain
- Blurred or decreased vision
- Sensitivity to light (photophobia)
- Floaters or dark spots in vision
- Tearing or discomfort
- Headaches
How is Autoimmune Uveitis Diagnosed?
Autoimmune uveitis is diagnosed through a combination of clinical evaluation, eye examination, and laboratory/imaging tests to identify the underlying cause of inflammation. An ophthalmologist begins by taking a detailed medical history and performing a comprehensive eye exam using a slit-lamp microscope to detect signs of inflammation in the anterior or posterior segments of the eye. Additional tests such as fundus examination, optical coherence tomography (OCT), and fluorescein angiography may be used to assess retinal or choroidal involvement. Blood tests are often ordered to screen for autoimmune markers like HLA-B27, ANA, or rheumatoid factor, and to check for related systemic diseases such as sarcoidosis or lupus. In certain cases, imaging studies like chest X-rays or CT scans may be done to look for systemic inflammation.
How is Autoimmune Uveitis Treated?
Autoimmune uveitis is treated with the goal of reducing inflammation, relieving symptoms, and preventing vision loss. Corticosteroids are often the first line of treatment and may be given as eye drops, oral tablets, or injections around or inside the eye to control inflammation. If the condition is severe or chronic, immunosuppressive medications such as methotrexate, azathioprine, or cyclosporine may be used to suppress the overactive immune response. In more resistant cases, biologic agents like adalimumab or infliximab are prescribed to target specific immune pathways. Supportive care includes cycloplegic eye drops to relieve pain and prevent scarring. Treatment of any underlying autoimmune disease is also important. Regular follow-up with an ophthalmologist and, if necessary, a rheumatologist is essential to monitor inflammation and prevent complications such as cataracts, glaucoma, or retinal damage.
