What is the definition of uveitis?

Updated: Jan 15, 2019
  • Author: Monalisa N Muchatuta , MD, MS; Chief Editor: Gil Z Shlamovitz, MD, FACEP  more...
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Uveitis is defined as inflammation of the uveal tract, the anatomy of which includes the iris, ciliary body, and choroid. See the image below.

Anatomy of the eye. Anatomy of the eye.

The iris regulates the amount of light that enters the eye, the ciliary body produces aqueous humor and supports the lens, and the choroid provides oxygen and nourishment for the retina.

A classification scheme for uveitis exists based upon anatomic location. [6]

Table 1. Classification of Uveitis (Open Table in a new window)


Primary Site of Inflammation


Anterior uveitis

Anterior chamber

Iritis/iridocyclitis/anterior cyclitis

Intermediate uveitis


Vitreitis/hyalitis/pars planitis

Posterior uveitis




Anterior chamber, vitreous, and/or choroid

All of the above

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