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What is the relationship between the Iris and the pupil?
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What is the relationship between the Iris and the pupil?

User StefanM
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The iris regulates the amount of light that enters your eye by adjusting the size of the pupil opening.
User Joe Seifi
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2 votes
The iris contains muscles that allow the pupil to become larger and smaller !
User Alireza Ghanbarinia
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