Explanipedia Public Learning Modules Vs Mis Dis Mal Information:
Description
In humans and most mammals and birds, the iris (PL: irides or irises) is a thin, annular structure in the eye, responsible for controlling the diameter and size of the pupil, and thus the amount of light reaching the retina. Eye color is defined by the iris. In optical terms, the pupil is the eye's aperture, while the iris is the diaphragm.
*[PL]: plural form
Iris (Anatomy) News
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