Uveitis

Uveitis is inflammation inside the eye involving the uveal tract and sometimes adjacent ocular structures. It is clinically important because it may cause eye pain, redness, light sensitivity, blurred vision, and floaters, and in some cases can threaten sight if not treated promptly. Uveitis is not a single disease pattern; the presentation and urgency depend on which part of the eye is involved and whether there is an associated systemic condition. ^[1][2][3]

Why is uveitis important?

Uveitis matters because delayed diagnosis can lead to complications such as glaucoma, cataract, macular edema, permanent visual impairment, and, in severe cases, vision loss. A painful red eye with photophobia is therefore not always “simple conjunctivitis.” Sudden visual symptoms or floaters deserve proper ophthalmic evaluation. ^[1][2][3]

What are the symptoms?

Symptoms may include eye redness, pain, light sensitivity, blurred vision, floaters, and reduced visual acuity. Some forms, especially anterior uveitis, often present with pain and photophobia, while others may present more with floaters or blurred vision than with marked redness. ^[1][2][3]

Because symptom patterns vary, the absence of one classic sign does not exclude uveitis. A person with a relatively “quiet-looking” eye may still have significant internal inflammation. ^[2][3]

What causes it?

Uveitis may be associated with autoimmune and inflammatory diseases, infections, trauma, or may remain idiopathic despite evaluation. In some patients it occurs in relation to systemic conditions such as spondyloarthropathies, inflammatory bowel disease, sarcoidosis, or other immune-mediated disorders. Infectious causes must also be considered in the right clinical context. ^[1][2][3]

How is the diagnosis made?

Diagnosis requires ophthalmologic examination. Slit-lamp assessment, intraocular pressure measurement, and examination of the posterior segment help determine the location and severity of inflammation. Additional testing may be guided by the suspected cause rather than being identical for every patient. ^[1][2][3]

How is treatment performed?

Treatment depends on the type and cause of uveitis. Common approaches include anti-inflammatory eye drops, pupil-dilating drops for selected anterior cases, systemic therapy when inflammation is more severe or posterior, and targeted antimicrobial treatment when infection is the cause. The key principle is that treatment is individualized and should be guided by an eye specialist. ^[1][2][3]

What are the complications?

Complications may include cataract, glaucoma, elevated intraocular pressure, macular edema, scarring, and permanent loss of vision. Recurrent or chronic inflammation increases the importance of structured follow-up. ^[1][2][3]

When is urgent evaluation needed?

Urgent ophthalmic evaluation is appropriate when eye pain, photophobia, sudden blurred vision, new floaters, or marked redness develops—especially if symptoms are sudden or unilateral. Vision changes associated with pain should not be self-treated as a routine eye irritation. ^[1][2][3]

Follow-up and relation to daily life

Uveitis may affect work, driving, reading, and daily comfort. Even after symptoms improve, follow-up remains important because inflammation can recur or complications may emerge over time. Patients may also require monitoring for treatment-related side effects depending on the therapies used. ^[1][2]

Why is investigating underlying systemic disease important in uveitis?

Because uveitis can be the first clue to an associated systemic inflammatory disease. Identifying a broader autoimmune or infectious context may change both the ophthalmic treatment plan and overall long-term management. ^[2][3]