A close-up photograph of what appears to be a light-brown human eyeball shows the organ's expansive, cavernous depths surrounding a seemingly bottomless, black pit that, together, mimics the ...

Regardless of how they look, all human eyes are in fact brown at their core, with the reflection of light determining the color we see in them.

A study published in Nature Communications reveals the first documented case of blue eyes in a 17,000-year-old newborn from the Paleolithic era, born with a heart condition. The remains of the ...

In 2008, a study led by Hans Eiberg from the University of Copenhagen claimed that all blue eyes link back to a single ancestor who lived between 6,000 and 10,000 years ago.