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Iris

The iris is the colored part of the eye. A circular muscle in the iris controls the amount of light that enters the eye through the pupil.

Pigment cells (melanin) in the iris produce its color. Each person's irises have a distinct color, texture, and pattern.

By Healthwise Staff
Primary Medical Reviewer Kathleen Romito, MD - Family Medicine
Specialist Medical Reviewer Christopher J. Rudnisky - Ophthalmology
Last Revised June 18, 2009

WebMD Medical Reference from Healthwise

Last Updated: June 18, 2009
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