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 ...

Ever wondered what the most common eye colors are? Well, they might not be exactly what you expected them to be.

We see higher frequencies of light as blue or violet, lower frequencies of light are seen as red and orange. Green light is in the middle. Our eyes only detect three colours: red, green and blue.