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Iritis is inflammation that occurs in the iris, the colored ring that surrounds the pupil in the eye. While iritis is the common name for this condition, it is medically known as anterior uveitis. The uvea is the name given to the eye's internal pigmented parts, including the ciliary body, iris, and choroid. Iritis is the most common type of uveitis and can occur in one or both eyes. If it's left untreated, an inflamed iris may lead to serious complications, including vision loss. It's important for someone experiencing iritis symptoms to see an eye doctor right away.

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1. Functions of the Iris

The iris lies between the cornea and the lens and can range in color from light blue to dark brown. The pupil, the black part inside the iris, allows light into the eye. The iris is part of the uvea, the colored middle layer of the eyeball composed of the ciliary body, iris, and choroid. Not only does the iris give each individual a specific eye color, but it also controls the size of the pupil. One of the iris muscles dilates the pupil in dim light while another constricts the pupil in bright light.

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