Researchers have investigated the impact of 10-min very light exercise on pupil size and prefrontal function. Their findings provide the first evidence that changes in pupil size during exercise can ...

A stage of sleep – reflected in the size of our pupils – is important to committing recent memories to the brain, which could be manipulated to improve cognitive function and even identify issues with ...

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 ...

Examining the pupil and performing motility checks are key for effectively managing patients with ptosis and catching underlying conditions, according to a speaker at Hawaiian Eye 2026. “When you ...

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

Researchers used quantitative pupillometry to detect pupillary changes in high-school athletes after they sustained a high-acceleration head impact. These pupillary changes, indicative of changes in ...

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, ...

The eyes are a window into our autonomic nervous system. Everyone's unique personal history and autobiographical experiences have the power to influence how and when the sympathetic nervous system ...