Iris
Medical term · I
The colored ring in front of the lens that controls the size of the pupil and how much light enters the eye.
Related terms
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PupilThe dark, circular opening in the middle of the iris of the eye.
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Posterior chamberThe part of the eye behind the iris and in front of the lens that is filled with aqueous humor.
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Schlemm's canalA circular drainage system in the eye located where the clear cornea, white sclera, and colored iris meet to form an angle.
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Trabecular meshworkA system of fine, mesh-like tissue in the anterior chamber of the eye through which aqueous humor drains; located in the angle where the clear cornea, white sclera, and colored…