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What is The most common systemic association of scleritis is- and explain in detail?
Scleritis refers to a chronic inflammation of the scleraproper. It is a comparatively serious disease whichmay cause visual impairment and even loss of theeye if treated inadequately. Autoimmune collagen disorders, especiallyrheumatoid ahritis, is the most commonassociation. Overall about 5% cases of scleritisare associated with some connective tissuedisease. About 0.5 percent of patients (1 in 200)suffering from seropositive rheumatoid ahritisdevelop scleritis. Other associated collagendisorders are Wegener's granulomatosis,polyaeritis nodosa (PAN), systemic lupuserythematosus (SLE) and ankylosing spondylitis. REF:Comprehensive ophthalmology,AK Khurana,4th edition,pg no.129.