[Ocular manifestations of rheumatic diseases. Cooperation between internist/ophthalmologist].

A red or painful eye may be the clue to a systemic condition, many of which are of a rheumatological or immunological nature. Conjunctivitis may occur in Sjögren's Syndrome, Reiter's Syndrome (and other sero negative spondyloarthropathies) and with infections such as chlamydia and viruses. 70% of cases of episcleritis are idiopathic, the other 30% being associated with rheumatoid arthritis or other connective tissue diseases or herpes zoster infection. Scleritis may be seen with connective tissue diseases or auto immune conditions (rheumatoid arthritis, Wegener granulomatosis, polyarteritis nodosa, relapsing polychondritis, SLE), infections (herpes, tuberculosis, syphilis, aspergillosis) or metabolic (gout, porphyria, cystinosis). Retinal vasculitis is seen in SLE, Behçet's Disease, sarcoidosis, polyarteritis nodosa, Whipple's disease and Crohn's disease among others. However, uveitis presents perhaps the greatest diagnostic challenge and interface between ophthalmology and rheumatology. Some syndromes are purely ophthalmological (eg: Fuch's heterochromic cyclitis) but others may lead to the diagnosis of a rheumatic disorder (eg: recurrent unilateral acute anterior uveitis and ankylosing spondylitis). Systemic syndromes most likely to be associated with uveitis are Reiter's disease, ankylosing spondylitis, sarcoidosis, juvenile arthritis, interstitial nephritis, inflammatory bowel disease, syphilis. The patterns are different, eg: acute painful unilateral anterior uveitis with ankylosing spondylitis and chronic asymptomatic bilateral uveitis in juvenile arthritis (ANA positive, pauci-articular) or bilateral symptomatic uveitis in sarcoidosis. An illustrative case will be presented and an algorithm for the evaluation of uveitis discussed.