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.
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