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See all on WikipediaIris (anatomy) - Wikipedia
The iris (pl.: irides or irises) is a thin, annular structure in the eye in most mammals and birds, responsible for controlling the diameter and size of the pupil, and thus the amount of light reaching the retina. In optical terms, the pupil is the eye's aperture, while the iris is the diaphragm. Eye color is defined by the iris. See more
The word "iris" is derived from the Greek word for "rainbow", also its goddess plus messenger of the gods in the Iliad, because of the many See more
The iris consists of two layers: the front pigmented fibrovascular layer known as a stroma and, behind the stroma, pigmented epithelial cells. See more
The iris controls the size of the pupil by means of contracting the iris sphincter muscle and/or the iris dilator muscle. The size of the pupils is dependent on many factors (including light, emotional state, cognitive load, arousal, stimulation), and can range from less … See more
Iridology
Iridology (also known as iridodiagnosis) is an alternative medicine technique whose proponents believe that patterns, colors, and other characteristics of the iris can be examined to determine information about a patient's See moreWikipedia text under CC-BY-SA license Iris of the Eye: Definition, Anatomy & Function - Cleveland Clinic
The iris is the colored part of your eye that controls your pupil and lets light in. Learn about its structure, function, common disorders and how to care for it.
- The iris surrounds the pupil at the center of your eye. Your eyeball has several layers that sit on top of each other, like an onion. The iris is one layer from the outside — under the corneaand o…
Iris: Anatomy, Function, and Associated Conditions
Oct 22, 2024 · Learn about the iris, the colored part of the eye that regulates light and focus. Find out about its anatomy, function, associated conditions, and how to keep it healthy.
Eye Anatomy: Parts of the Eye and How We See
Apr 29, 2023 · Learn about the structure and function of the eye, from the outside to the inside. The iris is the colored part of the eye that controls the size of the pupil and regulates the amount of light entering the eye.
Iris of the Eye: Anatomy, Functions & Associated …
Oct 9, 2024 · Learn about the iris, the colored part of the eye that controls pupil size and regulates light entering the eye. Find out how eye color, pupil size, and various disorders affect the iris and pupil.
What Is the Iris of the Eye? - Verywell Health
Apr 23, 2022 · The iris is the colored part of the eye that controls the amount of light that enters into the eye. Learn about the iris structure, pupil size, iris color, and common iris and pupil abnormalities.
Iris Anatomy of the Eye, Pictures & Definition | Body Maps
Jul 17, 2023 · The iris is the part of your eye that controls the amount of light entering and determines your eye color. Learn about its structure, function and how it changes over time.
Iris | Eye, Structure, Anatomy, & Function | Britannica
The iris is the colored muscular part of the eye that controls the size of the pupil and regulates the amount of light entering the eye. Learn about the anatomy, function, and diseases of the iris from Britannica, the online …
The Iris: Understanding Its Anatomy, Function, and Treatment – …
Jul 7, 2024 · The iris is the colored part of the eye that surrounds the pupil and controls the amount of light entering the eye. It is composed of muscular tissue and pigmentation, which …
Iris - Structure, Location, Function, Anatomy, Diagram
Sep 30, 2024 · The iris is a key structure in the eye responsible for controlling the size of the pupil and regulating the amount of light that enters the eye. Its unique anatomical features …
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