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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 in the iris produce its color. Each person's irises have a distinct color, texture, and pattern.

ByHealthwise Staff
Primary Medical ReviewerKathleen Romito, MD - Family Medicine
Specialist Medical ReviewerChristopher J. Rudnisky, MD, MPH, FRCSC - Ophthalmology

Current as ofSeptember 9, 2014

WebMD Medical Reference from Healthwise

Last Updated: September 09, 2014
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.