Brown is the most common eye color worldwide by a large majority. In contrast, green is one of the rarest eye colors worldwide. The color of the eyes depends on how much melanin the eyes contain.

More than 50% of people worldwide have brown eyes, making brown the most common eye color. Some medical conditions can also affect eye color. Share on Pinterest ohlamour studio/Stocksy United The ...

Eye color change surgery is used to change the colored part of the eye, called the iris, after an injury or other medical condition affecting the eye. It is also used for cosmetic reasons as a ...