Uveitis as a cause of visual loss in arthritides and comparable conditions

Objective. To examine the role of inflammatory rheumatic diseases and compa rable conditions in the etiology of severe uveitis leading to visual impair ment and blindness. Methods. A retrospective study based on the Finnish Register of Visual Impa irment. At the end of 1996, the Finnish Register of Visual Impairment inclu ded 296 uveitis patients in whom uveitis was the main cause of visual impai rment. The patient records were examined retrospectively to investigate the etiology of severe uveitis. Due to the incompleteness of data obtained of the patients blinded a long time ago, we included only 174 uveitis patients whose visual handicap (best corrected visual acuity in the better eye < 20 /60 or severe visual field loss) was stated during 1980-1996. Results. A total of 174 uveitis patients were found, 72 male and 102 female . A diagnosed or presumed inflammatory rheumatic disease or comparable cond ition was found in 38/174 (22%) patients: juvenile rheumatoid arthritis in 14 (8%), spondyloarthropathy (ankylosing spondylitis or reactive arthritis) in 10 (6%), sarcoidosis in 5 (3%), seronegative rheumatoid arthritis in 4 (2%): Behcet's disease was diagnosed in 2 (1%), 1 patient had polymyositis. 1 polyarteritis nodosa. and 1 juvenile systemic lupus erythematosus. In ad dition to the above. 10 (6%) patients had chronic back pain and 5 (3%) pati ents various noninflammatory joint problems. Diverse other ophthalmologic o r systemic disease was detected in 38 (22%) cases. Trauma or surgery caused uveitis in 9 (5%) patients. For 74/174 (43%) uveitis patients no specific associating condition could be shown. Legal blindness was documented in 65/ 174 (37%) patients, including 8 totally blind persons. Conclusion. This study provides first data on the relative importance of in flammatory rheumatic diseases and comparable conditions in the etiology of severe uveitis leading to visual handicap and blindness.