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What is the function of the pupil in the human eye?

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You may not think there is much to the pupil of the eye, but it's a window to your emotions and a key feature in managing the amount of light that... read more

The primary function of the human pupil is to regulate the amount of light that enters the eye. When the pupil is smaller, less light enters the eye in bright environments. The pupil gets larger as light levels decrease to let more light into the eye. Doctors examine the pupil to ascertain one's neurological function. read more

The pupil serves two important functions - to control the illumination in the eye, and to improve the optical quality of the image on the retina. The first function is obvious - the smaller the hole, the less light gets in. read more

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Medical Encyclopedia - Structure and Function: How the Eye ...
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