The uvea is a layer of tissue beneath the white of the eye (sclera). It has three parts: the iris, which is the colored part of the eye; the choroid layer, which is the layer of blood vessels and connective tissue between the sclera and the retina; and the ciliary body, which secretes the transparent liquid (aqueous humor) into the eye.

There are wide varieties of reasons which may cause uveitis. It may range from autoimmune disorders to infections to unknown reasons.

• Autoimmune condition: It is the abnormality of self defence system. In this condition; body starts reacting against normal structures of the body itself.
• Infections (virus, bacteria, and protozoa): Variety of infections may lead to uveitis, most common in India is tuberculosis.
• Eye surgeries: sometimes after cataract surgery Lymphoma and leukemias ( type of blood cancer)
• Unknown causes

Patients commonly experiences intermittent attacks of redness, pain and increased sensitivity to sunlight, decrease in vision.

As uveitis is associated with other systemic conditions; eye specialist consults with other specialty doctors like chest physicians, rheumatologists, pathologist, and radiologists to investigate and treat this condition in best possible manner. For finding a cause; blood investigations and sometimes x-ray, CT scans are necessary. Sometimes, systemic drugs like steroids are necessary to treat.

Uveitis can be recurrent; therefore proper follow up of patient is necessary. Long duration of uveitis may lead to cataract and increased intraocular pressure and macular (part of retina) oedema. Therefore; timely treatment by eye specialist is mandatory.