Optical illusions can sometimes trick us into seeing things that aren't there, including colour, and this example has taken TikTok by storm. If you look at the image above and think the woman's eyes ...

Blue eyes have always caught attention, often seen as striking or mysterious, but the colour isn’t actually pigment at all. Scientists have now explained how light and structure, not genetics alone, ...

Optical illusions have a way of tricking our brains in ways that you can't even imagine. These mind-bending images may look ...

People with blue eyes can read better in darker conditions than those with brown eyes, a small study has found. This suggests having blue eyes is an advantage in low-light conditions, and might help ...