Please provide your email address to receive an email when new articles are posted on . We tend to think of the pupil as a simple structure but, in fact, it is constantly in flux. The pupil is ...
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Pupil function and disorders that affect it
The pupil controls how much light enters the eye, allowing for clear vision. In low light, pupils widen to let in more light, and in bright light, they narrow to prevent too much light from entering.
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