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September 26, 2018 By opticiancertif

Iris

Circular membrane that delimits the pupil. The iris acts as a diaphragm that contracts according to the intensity of light. Pigmented tissue lying behind the cornea that gives color to the eye (e.g., blue eyes) Controls light by contracting and constricting the opening (pupil).

Related Links

Iris

Eye with uvea – Mayo Clinic

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