To investigate the incidence and clinical characteristics of juvenile idiopathic arthritis (JIA)-associated uveitis in Korea and to identify the risk factors for developing uveitis and poor visual outcome.

We performed a retrospective chart review of 149 patients who were diagnosed as JIA between January 2001 and December 2012. Patients were classified based on the International League of Associations for Rheumatology (ILAR) criteria and the incidence and clinical course of uveitis according to each subtype was investigated. We also evaluated the risk factors for poor prognostic outcomes.

The present study included 79 males and 70 females and the mean age was 7.42 ± 3.82 years. In 13 patients (8.6%), uveitis manifested evenly among JIA subtypes, including 5 patients with oligoarthritis type, 4 patients with polyarthritis rheumatoid negative type, and 4 patients with systemic type. Anti-nuclear antibody (ANA) was detected more in the uveitic group (46.13%). The characteristics of uveitis were acute (85%), bilateral (85%), and anterior uveitis (92%). Chronic uveitis occurred in only 2 patients who had uveitis at an early age (mean age of 5 years) and had severe anterior chamber reaction at presentation. Poor visual outcome was associated with band keratopathy and posterior synechiae preceded by the chronic uveitis.

JIA-associated uveitis occurred evenly in each subtype. Uveitis was increased in the presence of ANA. Most uveitis showed good visual outcomes but in cases of early uveitis onset and with severe anterior chamber reaction at presentation the risk of chronic uveitis increased resulting in poor visual outcomes.