Uveitis is classified anatomically as Anterior uveitis: Localized primarily to the anterior segment of the eye, includes iritis (inflammation in the anterior chamber alone) and iridocyclitis (inflammation in the anterior chamber and anterior vitreous) Intermediate uveitis: Localized to the vitreous cavity and / or pars plana (part of the ciliary body that extends posteriorly beyond the junction of the iris and sclera) Posterior uveitis: Any form of retinitis, choroiditis, or inflammation of the optic disk Panuveitis: Inflammation involving anterior, intermediate, and posterior structures Uveitis is also classified by onset (sudden or insidious), duration (limited or persistent), and course (acute, recurrent, or chronic).