We classify uveitis into anterior, posterior, and diffuse types. The anterior forms can be subdivided into iridocyclitis and cyclitis. Most often it is easy to decide whether an inflammation affects both the iris and the ciliary body, or the ciliary body alone. Also, when extension from the ciliary body occurs to the peripheral choroid and to the retina, characteristic signs develop. In addition to the preceding classification we use the term "granulomatous" if the anterior eye shows the features of this type of inflammation, as described by Woods.1 Anterior uveitis which primarily involves the ciliary body may exist as a separate entity, or there may be involvement of adjacent structures, such as the peripheral choroid and retina, vitreous, lens, and anterior chamber. Remote effects also may develop in the posterior retina and optic nerve as a result of perivascular extension of the inflammation along the retinal vessels.
HOGAN MJ, KIMURA SJ. Cyclitis and Peripheral Chorioretinitis. Arch Ophthalmol. 1961;66(5):667-677. doi:10.1001/archopht.1961.00960010669011