The rarest eye color has been revealed. Free Technical Library News

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Rarest eye color revealed

02.07.2023

Approximately 10 thousand years ago, all people on Earth had the same shade of eyes - brown. However, due to genetic changes, a modern person has several options for eye color: brown, blue and green. And green is the rarest.

According to the American Academy of Ophthalmology (AAO), only 2% of the population has green eyes, making it the rarest. 79% of people on the planet have brown eyes, while the rest have blue eyes. Ophthalmologists explain that eye color is determined by the presence of melanin, which also colors hair and skin.

"People with brown eyes have a significant amount of melanin in the iris, while people with blue eyes have much less," says ophthalmologist and MD Yuna Rapoport.

Due to varying amounts of melanin, eye color can range from light blue to dark brown, while green is in the middle in terms of melanin content.

Ophthalmologists note that the thickness of the iris also affects eye color. For example, if a person has a low melanin content and a thin shell, the eyes will have a blue or gray tint. Doctors have also explained why some people develop purple eyes. Under certain conditions, the environment reflects light at a certain angle, which can temporarily give blue eyes a purple tint.

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