A former teacher has been banned from the profession indefinitely after he was found to have engaged in inappropriate and ...

Background The normal pupillary constriction to light is an involuntary reflex that can be easily elicited and observed without specialized equipment or discomfort to the patient. Attenuation of this ...

While judging their sensory environments, decision-makers seem to use the uncertainty about their choices to guide adjustments of their subsequent behaviour. One possible source of these behavioural ...

Medically reviewed by Diana Apetauerova, MD Key Takeaways Anisocoria is when the pupils of your eyes are different sizes.

For the first time, researchers have been able to observe how the pupils react during sleep over a period of several hours. A look under the eyelids showed them that more happens in the brain during ...

This story is from The Pulse, a weekly health and science podcast. Find it on Apple Podcasts, Spotify or wherever you get your podcasts. The videos go like this: Someone uses their phone to zoom in on ...

Pupil size predicts death and hospital readmission in patients with heart failure, according to research published today in ESC Heart Failure, a journal of the European Society of Cardiology (ESC). 1 ...

The dark part of your eye is called the pupil. Pupils can grow or shrink according to different lighting conditions. Other factors, such as drugs, can also affect pupil size. Read on to find out which ...

Last month, I compared systems in the U.S. and India. This month, my attention is on Colombia, a country whose breathtaking geography, social dynamics and history shape the school commute in ways that ...

Marcus Gunn pupil is also known as Marcus Gunn sign and relative afferent pupillary defect (RAPD). It’s when the eye’s pupil only slightly contracts or dilates when light shines over it, instead of ...

Marcus Gunn pupil is a rare condition that affects the eyes, causing each to respond differently when a light is shone into them. Treatment typically focuses on the cause of Marcus Gunn pupil. This ...

When driving in the evening, oncoming vehicles can dazzle you and impair your vision. Sometimes so badly that you can only make out the edges of the road, the road median or people. Although ...