Uveitis can affect one or both eyes, and can be categorised into the following types, depending on what part or parts of the eye are affected by inflammation:
1. Anterior uveitis: inflammation affects the front of the eye, including the iris (iritis) or iris and the ciliary body (iridocyclitis); anterior uveitis is the most common form of uveitis and most frequently occurs in younger and middle-aged people
2. Intermediate uveitis: affects the middle of the eye, in the area localised to the vitreous; intermediate uveitis most commonly affects young adults.
3. Posterior uveitis (also known as choroiditis): affects the area at the back of the uvea known as the choroid, and the retina may also be affected; posterior uveitis is the least common form of uveitis
4. Panuveitis: is the term used to describe when the inflammation affects all three layers of the uveal tract
Anterior uveitis is the most common type in the diabetic population.[10, 13]