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  2. April 18, 2024. The tall, beautiful iris, named after the Greek goddess who rode rainbows, comes in many magical colors. Despite its divine origins, this beautiful flower is rugged, reliable, and easy to grow. Learn to plant and care for irises for long-term success in your gardens.

  3. Feb 20, 2024 · The iris is the colored part of the human eye and a component of the uvea. Also known as the uveal layer or uvea coat, the uvea is a pigmented layer found between the retina and the sclera (white of the eye). In addition to the iris, the uvea also consists of the choroid and ciliary body.

  4. 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.

  5. 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.

  6. en.wikipedia.org › wiki › Iris_(plant)Iris (plant) - Wikipedia

    Iris is a flowering plant genus of 310 accepted species 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.

  7. 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.

  8. 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.

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