The iris is the colored portion of the eye, amembrane located
between the cornea and lens that regulates the entrance of light
into the eye by contracting and dilating.
Review Date: 08/11/2009
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of
General Medicine, Department of Medicine, University of Washington
School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical
Director, A.D.A.M., Inc.
A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org)
