Uveitis is inflammation of part or all of the uveal tract, the layer under the white part of the eye. The uveal tract is made up of 3 parts:
- Iris (the colored part of the eye)
- Ciliary body
There are several different types of uveitis. The types get their names based on the part of the uveal tract that is affected.
Inflammation of the iris and/or ciliary body. It is also known as iritis or iridocyclitis.
Inflammation of the ciliary body and may extend to the nearby vitreous humor. This type of uveitis is also known as pars planitis.
Inflammation of the choroid and may extend to the nearby retina and/or vitreous humor.
Inflammation of all parts of the uveal tract.
The above types of uveitis can also be labeled as granulomatous (gran-u-lo-ma-tis) or non-granulomatous. Granulomas refer to the kind of inflammatory cells that are present. These can be identified with the eye exam by your eye doctor, or by a biopsy of the tissue in the eye.