The eyes are often referred to as the “windows to the soul.” In fact, there is a grain of neurobiological truth to this. An international research team from the Universities of Göttingen and Tübingen, ...

From a scientific perspective, it may sound a bit too fanciful to call our eyes “windows to the soul.” But research suggests that looking into them can, quite literally, offer a peep into a person’s ...

Eye dilation refers to a widening of the pupils. When doctors dilate the pupils during an eye exam, it typically lasts between 4 and 24 hours. Doctors sometimes use eye dilation drops to dilate a ...

The differential diagnosis of mydriasis that is greater in bright light includes third nerve palsy, Adie's pupil, traumatic mydriasis, and pharmacologic mydriasis. In this case, third nerve palsy was ...

A contracted pupil during sleep may be an indication the brain is replaying new memories while a dilated one may hint at older memories being relived, a new study suggests. The study, published in the ...

Pupils are the black circles located in the center of your iris, or the colored part of your eye. The pupil allows light to enter your eye and often changes in size. When your pupils appear larger, ...

A compelling study has found pupils respond in the same way to the number of objects in one’s field of vision as they do to light. Experiments revealed pupils dilate in response to images with larger ...