It is a painful inflammation of the sclera, associated with an underlying autoimmune disease, such as rheumatoid arthritis. It can be: 1) anterior: the most common type, affects the anterior part of the sclera, it can be a) diffuse is the most common and treatable type, causes generalized redness and swelling throughout the sclera or in a part of the front of it. b) nodular, it has nodules or lumps that it causes, often painful to the touch, on the surface of the eye. c) necrotizing is the most serious form, it can destroy the sclera tissues is a rare form, painless) 2) posterior: less common, affects the back of the eye. It is often unrelated to an autoimmune disease, it can appear on its own or in conjunction with anterior scleritis, it can have pain and tenderness, it can cause complications such as retinal detachment and angle-closure glaucoma.

Treatment: a) Corticosteroid drops to help reduce inflammation. B) Corticosteroid pills. C) non-steroidal anti-inflammatory drugs (NSAIDs). D) immunosuppressants: for severe cases.