eye

As an estimated 300,000 visitors make their way towards Bloomington for the upcoming solar eclipse, experts are warning about the dangers of viewing the event without proper eyewear.

Although the eye is complicated, biologists still have a good understanding of how it evolved. In modern animals, they have found eyes of all different degreees of complexity.

Since we have two eyes, why is it that we don't see two of everything? We seem to see like the cyclops in Greek mythology, as if we had one eye on our forehead.

Researchers think that looking at how quickly a person's pupil dilates when taking cognitive tests could predict if a person is at an increased risk for Alzheimer's disease, even before any obvious symptoms show up.