A 25–year old male gives a history of redness, pain and mild diminished vision in one eye for past 3 days. There is also a history of a low backache for the past one year. On examination, there is circumcorneal congestion, the cornea is clear apart from a few fine keratic precipitates on the corneal endothelium, there are 2+ cells in the anterior chamber and the intraocular pressure is within normal limits. The patient is most likely suffering from –
Information in this question are :-


Age → 25 years
A low backache (most likely due to sacroiliitis)
Circumcorneal congestion, KPs, aqueous cells (2 + cells in anterior chamber)
Normal intraocular tension


The diagnosis is anterior uveitis.
A most common cause of anterior uveitis in young adults is HLA-B27 associated uveitis (ankylosing spondylitis). Low back pain (due to sacroiliitis) further supports the diagnosis.
Acute attack of angle closure glaucoma
HLA B–27 related anterior uveitis
JRA associated uveitis
Herpetic keratitis