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Iris

Definition

The iris is the colored part of the eye located between the cornea and lens. The iris' round, central opening (the pupil) shrinks and widens to control light coming into the eye. This allows you to see well under different lighting conditions.

Inflammation of the iris is called iritis.

Information

References

Evans M. Uveitis and other intraocular inflammations. In: Yanoff M, Duker JS, eds. . 3rd ed. St. Louis, Mo: Mosby Elsevier; 2008:chap 7.

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Encyclopedia content is provided as information only and not intended to replace the advice and instruction from your personal physician.