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.

Current as of: August 21, 2015

Author: Healthwise Staff

Medical Review: Kathleen Romito, MD - Family Medicine & Christopher J. Rudnisky, MD, MPH, FRCSC - Ophthalmology