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Breathing Alters Pupil Size: New Insight Into Vision

4/27/2025

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Summary

Story summary

Breathing has a surprising effect on our vision, as researchers at Karolinska Institutet, Sweden, discovered that pupil size changes with each breath—shrinking during inhalation and expanding during exhalation. This fascinating link between respiration and brain function could pave the way for better understanding neurological disorders and improving precision tasks.

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Story summary

Breathing has a surprising effect on our vision, as researchers at Karolinska Institutet, Sweden, discovered that pupil size changes with each breath—shrinking during inhalation and expanding during exhalation. This fascinating link between respiration and brain function could pave the way for better understanding neurological disorders and improving precision tasks.