When stimulated by the parasympathetic nervous system (sometimes known as the "rest and digest" system), it contracts to ...

Changes to your eyesight are normal with age. You may be less able to see up close without reading glasses. It may take your ...

Even when people weren’t sure where on the screen they had seen the word before but recognized the word as familiar, their ...

Sometimes, pupils can dilate without any change in light. The medical term for this is mydriasis. Medicines, injuries, and diseases can all cause this eye condition. Here's a closer look at some ...

By Michelle Crouch Perhaps the most unpleasant part of an eye exam is when the doctor squeezes in the dreaded drops to dilate your pupils. They sting your eyes, blur your vision and leave you ...

If you have your pupils dilated for an eye exam, they may stay dilated for several hours. Your eye health provider dilates your pupils so they can get a clear view of the internal structures of ...

During the Renaissance in Italy, women used eye drops made from a poisonous plant called Atropa belladonna (belladonna means “beautiful woman” in Italian) to make their pupils dilate.

Working memory plays a pivotal role in our day-to-day functions. It's an essential brain skill that helps us manage and ...

Participants whose pupils dilated more performed better on the task ... “What would be really cool is to do simultaneous eye tracking and functional neuroimaging,” Robison says.

Although cures for age-related macular degeneration are elusive, the case for prevention through nutrition looks strong and ...

There was no view posteriorly in the right eye. Dilated fundus examination of the left eye revealed a healthy disc with sharp margins and no vitreous cells or debris. There were subtle yellow ...