Dilated pupils (mydriasis) occur when the pupils open larger than usual. This normally happens in darker lighting to allow more light into the eye, but dilated pupils can also indicate an underlying ...

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, ...

The iris is a structure behind the transparent cornea of the eye. It has a circular opening called the pupil that changes size in response to the light level. Your pupils are usually the same size as ...

At my job, I'm going to be working with a new laser soon, and as such, I have to pass some certifications to become a laser operator. One of the requirements is that I take an eye exam to determine if ...

"Pupil size oscillated between contracted and dilated substates in a minute timescale, signaling an alternation between different hippocampal network states. Although SWRs occurred throughout the ...

The pupils of our eyes get larger when we are focusing on a task–and the size may give clues about our working memory capabilities, a new study has found. A person's pupils dilate in low-light ...