[Scleritis: when might a systemic disease be involved?].

Scleritis is typically a severe painful inflammatory disorder of the eye. This process may involve the sclera but also the cornea, adjacent episclera, and underlying uvea and therefore threaten vision. Careful clinical history taking, detailed ocular examination, appropriate investigation for systemic disease, and timely intervention with the use of immunosuppressive drugs when necessary has improved the long-term outcome of patients with scleritis.