![]() Individuals with brown eyes have melanin pigments in both layers of the iris, unlike people with other eye color variants who have little melanin in the back layer. The iris consists of two layers of muscles with several other types of cells. How Do Brown Eyes and Hazel Eyes Occur?ĭifferent eye colors result from the varying amounts of melanin pigment within the iris, the colored part of the eye surrounding the pupil. In the United States, brown eyes account for about half of the population’s eye color, whereas hazel eyes occur in around 15 percent. However, continental or regional eye color prevalence might follow different patterns.įor instance, 86 percent of the Irish population has blue or green eyes, while these two colors form only 12 percent of the global prevalence. Blue comes in a distant second with 8 percent, while only 5 out of 100 people (5 percent) have hazel eyes. Prevalence of Brown and Hazel Eyesīrown is the predominant eye color in the world, present in up to 79 percent of the global population. As a result, hazel eyes tend to swing between pure green and pure brown hues as the lighting conditions change.īesides higher melanin concentration than other eye colors, hazel and brown eyes have no similarities. The varying shades scatter light differently in various conditions. But color combinations of other shades like gold, amber, and blue also occur. Typically, hazel eyes take the color of a hazelnut - a mixture of green and brown. Although rare, hazel eyes have the second-highest concentration of melanin, making them appear light brown in some environments. People often confuse hazel with brown eyes because of the nearly similar hues. ![]()
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