Explain what happens to the size of the pupil of our eye in bright.
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In bright light the size of the pupil of our eye constricts and becomes small to reduce the amount of light going inside the eye. This reduction in size is facilitated by the muscles of iris.
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- In dim light, your pupil expands to allow more light to enter your eye. In bright light, it contracts. ... More light creates more impulses, causing the muscles to close the pupil. Part of the optic nerve from one eye crosses over and couples to the muscles that control the pupil size of the other eye.
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