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Definition: 'Iris'

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iris

Type: Term

Pronunciation: ī′ris, ir′i-dēz

Definitions:
1. The anterior division of the vascular tunic of the eye, a diaphragm, perforated in the center (the pupil), attached peripherally to the scleral spur; it is composed of stroma and a double layer of pigmented retinal epithelium from which are derived the sphincter and dilator muscles of the pupil.

Synonyms: orris



The information shown above for iris is provided by Stedman's.

* Stedman's, part of Lippincott Williams & Wilkins, provide a comprehensive line of health-science publications for healthcare professionals and medical students.

Stedman's Medical Dictionary. Copyright © 2006 Lippincott Williams & Wilkins. All rights reserved.








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