How does the iris control the size of the pupil in dim light and bright light?
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The amount of light entering the eye is controlled by the muscles of the iris which contract or dilate the pupils. The pupilbecomes larger in less light to allow more light to go in and in bright light it constricts or becomes smaller to restrict the amountof light going in.
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Answer:
In bright light, the iris contracts the pupil to allow less light to enter the eye. In dim light, the iris expands the pupil to allow more light to enter the eye.
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