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.
|Primary Medical Reviewer||Kathleen Romito, MD - Family Medicine|
|Specialist Medical Reviewer||Christopher J. Rudnisky, MD, MPH, FRCSC - Ophthalmology|
|Last Revised||June 9, 2011|
WebMD Medical Reference from Healthwise