For over a century, scientists believed that light, focus distance, and cognitive effort were the main forces behind changes in pupil size. But a new discovery adds breathing to that list. Researchers ...

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

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

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 ...

IRVINE, Calif.--(BUSINESS WIRE)--A new peer-reviewed study shows that even one occurrence of an abnormal Neurological Pupil index™ (NPi®) differential, measured by NeurOptics’ NPi Pupillometer, can be ...

Study shows the NPi® differential is another value measured by the NPi Pupillometer that clinicians should consider when managing critically ill patients IRVINE, Calif.--(BUSINESS WIRE)--A new ...