Brown eyes and facts about them

Each pair of brown eyes is unique. That is, you cannot find two exactly the same shades.

More common in Caucasian countries.

About 10,000 years ago, all humans had brown eyes, until a person living in the Black Sea region developed a genetic mutation that led to blue eyes.

Brown-eyed people are more credible than blue-eyed, scientists have established such facts.

A sad or happy, smiling or crying person with brown eyes seems to have a different eye color every time.

People with brown eyes may be less susceptible to certain conditions.