For extra-articular manifestation of RA, select the most likely diagnosis.Most common form of eye involvement: (A) Felty's syndrome, (B) rheumatoid vasculitis, (C) episcleritis, (D) Sjogren's syndrome
Answer is D. Direct eye involvement with the rheumatoid process (episcleritis or scleritis) occurs in less than 1% of patients. However, 15-20% may develop Sjogren's syndrome with attendant keratoconjunctivitis sicca.