Eye color refers to the pigmentation of the iris, the colored part of the eye. It is determined by the amount and type of pigments present, primarily melanin. Common eye colors include brown, blue, green, and hazel. The variation in eye color is influenced by genetics, with multiple genes contributing to the final outcome.
The most common eye color worldwide is brown, while blue eyes are more prevalent in people of European descent. Eye color can also change over time due to factors such as age, lighting, and certain medical conditions. Understanding eye color can provide insights into genetic heritage and health.