Discover which country has the most blue eyes in the world and explore how eye colours like brown, green, and blue are spread across different regions.

Discover the rarest eye colour in the world—red or violet—found in less than 1 in 50,000 people due to ocular albinism.

Like most human traits, blue eyes are determined by genes, and no two people have exactly the same hue. It works a lot like individual fingerprints, making our eyes two of the most distinctive parts ...