Only 2% of the world's population have green eyes, making it the rarest eye color. Green Eyes - 2% Only 2% of the world's population have green eyes. Amber eye color is commonly found in Pakistan and the Balkan region, as well as in Southern France, the Iberian Peninsula, Italy, and Hungary, and in fewer numbers in the Middle East, Colombia, and the Southern Cone region. Unlike hazel eyes, which appear to shift colors, amber eyes have a solid gold hue. Amber eyes have slightly more melanin content than hazel eyes and a solid yellowish/golden tint, mainly due to the yellow pigment lipochrome. Amber Eyes - 5% Amber is the 3rd rarest eye color in the world.Īmber is the third rarest eye color in the world after green and gray, and approximately 5% of the world’s population have amber eyes. Hazel eyes are most common in the Middle East, North Africa, Brazil, and people of Spanish heritage. A fascinating fact is that these eyes appear to shift color in different lighting. Hazel eyes are usually a combination of green and brown and often flecks of gold or orange. The hazel eye color is primarily due to the combination of a decent amount of melanin and Rayleigh scattering. Read More Countries With The Most Blue-Eyed People Hazel Eyes - 5% Hazel eyes often appear to shift color in different lighting, giving them a mesmerizing look.Ībout 5% of the world’s population have hazel eyes. Blue eyes are also found in Central Asia, North Africa, South Asia, West Asia, and Southern Europe. Blue eyes are most common in northern and eastern Europe, particularly around the Baltic Sea. Scientists believe that all blue-eyed people trace back to a common ancestor, who most likely carried a genetic mutation that resulted in reduced melanin production. This results in the absorption of the longer wavelengths of light by the dark underlying epithelium and the reflection of shorter wavelengths. Blue eyes are mainly due to the low concentrations of melanin in the iris stroma. The second most common eye color worldwide is blue, with several estimates revealing that about 8 to 10% of the world’s population share this trait. Blue Eyes - 8 to 10% Blue eyes are the second most common eye color in the world. Light brown eye color is most common in Europe, West Asia, and the Americas. The most common eye color is dark brown in Africa, East Asia, and Southeast Asia. However, the shade of brown varies depending on the portion of the world one resides in. Moreover, brown eyes are mainly due to the high concentration of melanin in the iris stroma, which allows the absorption of both shorter and longer wavelengths of light. Researchers at the American Academy of Opthalmology have stated that everyone on planet earth had brown eyes around 10,000 years ago. Brown Eyes - 70 to 80% 70 to 80% of the world’s population have brown eyes.Ī whopping 70 to 80% of the world’s population have brown or darkly pigmented irises, making brown the most common eye color worldwide. In addition, OCA2 and HERC2 are the two major genes associated with the variation in eye colors. As of 2010, researchers believe that as many as 16 different genes influence eye color in humans, and most of these genes play a crucial role in the production, transportation, and storage of melanin pigment. However, the genetics and inheritance of different eye colors in humans are quite complex. Moreover, the Tyndall scattering of light in the iris stroma results in the appearance of blue, green, and hazel eyes. Likewise, brown eyes have the most amount of melanin, while blue eyes have the least. The more melanin concentration one has, the darker one’s eyes will be. In humans, this pigmentation of the iris depends on the melanin concentration in the iris pigment epithelium, it's content within the iris stroma, as well as the cellular density of the stroma. Two factors affect the color of one’s eyes: the pigmentation of the eye’s iris and the frequency of light scattering by the murky medium in the iris stroma. How Is Eye Color Determined? As many as 16 different genes influence eye color in humans. Eye color not only affects one’s personality but also reflects one’s ancestry, the melanin concentration in irises, and even one’s current health condition. It is, therefore, interesting to note how eye colors vary worldwide and the different percentages of people in the world that have brown, blue, hazel, amber, green, and gray eyes. The color of one’s eye is perhaps one of the first things people observe when they see each other. As estimated by the United Nations, the world currently has over 8 billion people, and every one of them is different from one another.
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