[Retinal vein occlusion. Diagnosis or symptom?].

Behçet's disease is a chronic recurrent systemic vasculitis and can affect nearly all organ systems. Eye involvement is characterized by uveitis with occlusive retinal vasculitis. Oral aphthous ulcers are the major primary symptom and arthritis, genital ulcerations and skin lesions are common extraocular manifestations. Gastrointestinal and vascular symptoms or manifestations of the central nervous system are less frequently seen. Biologic agents are used alone or in combination with immunosuppressive or cytotoxic drugs to prevent relapse as the prognosis is poor in patients with retinal vasculitis.