Evolving "Diagnostic" Criteria for Axial Spondyloarthritis in the Context of Anterior Uveitis.

Anterior uveitis is far more common than intermediate, posterior or panuveitis. About 50% of patients with acute anterior uveitis are HLA B27+. Those who are HLA B27+ are highly likely to have associated back, joint, or tendon disease. The majority of patients with acute anterior uveitis and inflammatory low back pain are suffering from axial spondyloarthritis and radiographic evidence for abnormal sacroiliac joints is not required to make this diagnosis. Received 12 October 2015; revised 31 January 2016; accepted 16 February 2016; published online 12 April 2016.