Joscelyne Kerr, 19, was diagnosed with an ultra-rare and cancerous tumour after noticing the pupil in her eye had expanded so ...

A recent study observed sleeping participants' pupils during sleep, using a new method that could have implications for ...

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 ...

A new study reveals that pupil size fluctuates constantly during sleep, reflecting changes in brain activation levels.

Nocturnal animals tend to have proportionally bigger eyes than humans do. They also tend to have pupils that open more widely in low light. So, at the outset, nocturnal eyes gather more light than ...

Garner conducted an experiment to see whether studying a person's pupils (the centers of their eyes) was a good indicator of ...

IN the past many investigations have been carried out on the static and dynamic reactions of the human pupil to illumination of the eye using white light. In this respect it seems surprising that ...