A 25 year old lady presents with severe sudden onset of pain,

A 25 year old lady presents with severe sudden onset of pain, corneal congestion, photophobia and deep anterior chamber in the right eye. The left eye is normal. Xray pelvis shows sacroiliitis. The diagnosis is


a) anterior uveitis 
b) posterior uveitis 
c) intermediate uveitis  
d) scleritis


Ans (a)