Iritis as the presenting symptom in ankylosing spondylitis.
D006801:Humans; D007500:Iritis / Q000209:etiology*; D013166:Spondylitis; D013167:Spondylitis, Ankylosing / Q000150:complications*
IRITIS/etiology and pathogenesis; SPONDYLITIS, ANKYLOSING/complications