Uveitis is an inflammatory condition affecting the uvea, the middle layer of the eye that includes the iris, ciliary body, and choroid, and it can lead to pain, redness, blurred vision, and sensitivity to light. It may develop suddenly or gradually and can affect one or both eyes. Causes vary and include autoimmune disorders, infections, eye injury, or systemic inflammatory diseases, though in some cases no clear cause is identified. Depending on which part of the uvea is involved, uveitis is classified as anterior, intermediate, posterior, or panuveitis. Prompt diagnosis and treatment are important to prevent complications such as glaucoma, cataracts, or permanent vision loss, and therapy typically involves anti-inflammatory medications, corticosteroids, or treatment of any underlying condition.