IL17A and autoimmune uveitis: Human autoimmune uveitis has been associated with the presence of Th17 response as supported by the elevation of IL-17 serum level and the expression of IL-17 from peripheral blood mononuclear cell (PBMC) in patients with uveitis and more importantly, high IL-17 level is associated with active uveitis and disease severity [4, 22, 23].