#PupilBreathingLink

In a revolutionary discovery, researchers from the Karolinska Institute in Stockholm and the University of Groningen have found that our pupil size changes in harmony with our breathing pattern—a phenomenon now known as the “pupillary respiratory phase response.” This cutting-edge research, recently published in the Journal of Physiology, adds a new dimension to our understanding of the body’s internal rhythms, revealing a connection that could have significant implications for both vision science and medical diagnostics.