A person’s pupils may be of different sizes (anisocoria) for several reasons, including physical trauma, response to light, and infection. The condition may also be present from birth.

Interestingly, pupil size was negatively correlated with age: older participants tended to have smaller, more constricted, pupils. Once standardized for age, however, the relationship between ...

But Engle says that pupil size has no relationship between gender, race or age in the studies that they have conducted. “Pupillometry is a promising new method to assess individual differences in ...

pupil size can decrease up to about 0.4 millimeters per decade, researchers report June 19 in Royal Society Open Science. “We see a big age effect,” says Manuel Spitschan, a neuroscientist at ...

Researchers from Cornell University informed that pupil is key to understanding how, and when the brain forms strong memories ...

Chimpanzees and humans may share the same ability to empathise with other individuals by involuntarily matching their pupil size. The mimicry only appears to work between two humans or between two ...

Every time you move your eyes or blink, your pupils "reset", leading to small changes in their size over the course of a second or two. In their new paper, Mather and Cavanagh provide compelling ...

A new study published in the journal Nature suggests that pupil size is key to understanding how and when the brain forms strong, long-lasting memories. Researchers at Cornell University in the US ...

A new statistical analysis of data from a long-term study on the teaching of mathematics and science has found that smaller class sizes ... grade (age 9-10) and eighth grade (age 13-14) pupils ...