Iritis is a common diagnosis in the ED, but did you know it was actually a subset of Uveitis.

Uveitis is an inflammation of one or all parts of the uveal tract which consists of the iris, the ciliary body, and the choroid.
 
The subsets of uveitis are:

1. anterior
2. confined to the iris and anterior chamber -- iritis
3. confined to the iris, anterior chamber, and ciliary body -- iridocyclitis.
4. Posterior uveitis -- choroiditis and chorioretinitis, is uncommon, with the exception of cytomegalovirus (CMV) retinitis in patients with AIDS.

Treatment of iritis and uveitis next week.

References

Emedicine Iritis and Uveitis  http://emedicine.medscape.com/article/798323-overview