The effect of pupil dilation with tropicamide on vision and driving simulator performance. Eye 2000;14:302–6.

Breathing influences pupil size, with contraction during inhalation and dilation during exhalation. This effect, controlled ...

Scientists have long studied the size of our pupils to understand attention, emotion and even medical conditions. But now, ...

The science of pupillometry takes a common intuition — that you can tell a lot about someone when you look them in the eye — and makes it concrete, measurable, and extraordinarily useful.

Study reveals a link between breathing patterns and pupil dilation, shedding light on how respiration affects brain function.

The company announced it has successfully started imaging patients with its first prototype of its device using both ...

Cats have superior night vision, allowing them to see in low light far better than humans. But what makes their eyes so ...

This is when the pupils are naturally different sizes. It is the most common type of anisocoria, and the difference between the pupil sizes is no more than 1 millimeter. Physiological anisocoria ...