According to the data considered by its authors—a team from the University of Sussex (UK) and Lund University ...

Half a billion years ago, the first true eye emerged in Earth’s oceans. Fossils now reveal what that ancient crystal vision could actually see.

For this month's ESA/Hubble Picture of the Month, NASA/ESA's Hubble Space Telescope is joined by ESA's Euclid to create a new ...

The space-based telescopes Hubble and Euclid combined forces to capture the vibrant remains of a dying star in stunning new ...

518-million-year-old fossil reveals vertebrates once had four eyes and extra organs that later shaped evolution.

Eye floaters can be a sign of retinal detachment, but there are many other causes. Some surgeries may help remove eye floaters that result from a detached retina. Eye floaters are when you see specks, ...

It has happened to many of us. While in the middle of work, a study session or just spending time with friends, your eyelid flutters for no apparent reason. At first, it may be nothing more than a ...

When the eye's drainage system clogs, pressure builds up and causes damage. The pressure can lead to glaucoma and vision loss. New research, published in the journal Immunity, reveals that a ...

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 ...

Eye-related side effects have been reported after the COVID-19 vaccination. But these effects are very rare. There are four different COVID-19 vaccines available in the United States. Receiving a ...

Pain behind the eye can result from eyestrain, migraine, dental problems, glaucoma, giant cell arteritis, and other causes. Treatment will depend on the cause, but applying cool or warm compresses may ...