In human anatomy, the iris is the colored, muscular part of the eye surrounding the pupil. The iris is in front of the lens and behind the cornea and is bathed in front and behind by a fluid known as the aqueous humor.
Anatomy of the Eye
Anatomy of the Eye, Kellogg Eye Center
A Detailed Look at the Eye The Canadian Association of Optometrists
The anatomy of the 'camera' eye UCL Institute of Ophthalmology - UCL – University College London
Eye Anatomy, Eye Care, Eye Health
Structure and Functions of Human Eye with labelled Diagram
Eyeball: Structure and function
Eye anatomy and physiology - how the eye and vision work
Eye Anatomy
Anatomy of the Eye, Eye Health, Eye Care, Camp Springs MD