For more than a century, scientists have understood that three factors control pupil size: light, focus distance, and ...

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Researchers have discovered a fundamental mechanism that affects the size of the pupil, namely our breathing. The study shows that the pupil is smallest during inhalation and largest during exhalation ...

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Researchers have discovered that breathing affects pupil size, with the pupil being smallest during inhalation and largest ...

Researchers at Karolinska Institutet in Sweden have discovered a fundamental mechanism that affects the size of the pupil, namely our breathing.

It was previously believed that our pupil size was only affected by three things: light, focusing on nearby objects and ...

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