The size of your pupils varies throughout the day, but most people’s pupils fall within a particular size range. We’ll look at when and why your pupils change size. First, the range of “normal” pupil ...

Please provide your email address to receive an email when new articles are posted on . Smaller pupil area measured in patients with acute HF was predictive of all-cause mortality and HF readmission, ...

It is commonly known that pupil size fluctuates in response to brightness and darkness during wakefulness. What is less commonly known is that pupil size is also regulated by the autonomic nervous ...

Neuroscientists have worked out how some newly discovered light sensors in the eye detect light and communicate with the brain. A team of Johns Hopkins neuroscientists has worked out how some newly ...

The pupillary light response helps our eyes see the world around us in various lighting conditions ranging from bright, sunny days to dark, moonlit nights. Like a camera's aperture, this adaptive ...