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Iris is a flowering plant genus of 310 accepted species [1] with showy flowers. As well as being the scientific name, iris is also widely used as a common name for all Iris species, as well as some belonging to other closely related genera.
Function. What does the iris of the eye do? Muscles in your iris control your pupil. When your pupil is wider (dilated), more light gets into your eye. When it’s narrower (contracted) less light gets in. As your iris squeezes or releases your pupil the amount of light reaching the rest of your eye changes.
Apr 23, 2022 · The iris is the colored part of the eye that controls the amount of light that enters into the eye. It is the most visible part of the eye. The iris lies in front of the crystalline lens and separates the anterior chamber form the posterior chamber. The iris in part of the uveal tract which includes the ciliary body that also lies behind the iris.
Aug 8, 2022 · Anatomy. Organs. The Anatomy of the Iris. A pigmented curtain regulating the amount of light entering the eye. By Mark Gurarie. Updated on August 08, 2022. Medically reviewed by Michael Menna, DO. Print. View All. Anatomy. Function. Associated Conditions. Tests. Frequently Asked Questions.
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. Etymology.
Apr 11, 2024 · Family: Iridaceae. Genus: Iris. Physical description. Irises are either bulbous or rhizomatous (with thick creeping underground stems). In species with a rhizome, the stem is usually horizontal, robust, and ringed with leaf scars. It often grows partially exposed but is firmly rooted in the soil.
iris, in anatomy, the colored muscular part of the eye surrounding the pupil, the small black opening in the center. The iris is located in front of the lens and behind the cornea. It is bathed in front and behind by a fluid known as the aqueous humor.
