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In humans, eye color is a highly sexually dimorphic trait. [18] Several studies have shown that men are more likely to have blue eyes than women, while women are more likely to have darker eye colors (green and brown eyes) than men. [18] [19] Sex is therefore a major factor in the expression of eye color genotypes. [18]
The other end of the spectrum of albinism is "a form of albinism called rufous oculocutaneous albinism, which usually affects dark-skinned people". [ 6 ] According to the National Organization for Albinism and Hypopigmentation , "With ocular albinism, the color of the iris of the eye may vary from blue to green or even brown, and sometimes ...
Periorbital hyperpigmentation, also known as hereditary dark circles, is characterized by darker skin around the eyes caused by the presence of additional melanin. It is an extremely common hereditary human characteristic and is frequently found on individuals with dark skin. Periorbital hyperpigmentation is most prevalent within the 16–25 ...
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Then, the researchers categorized each response as either light—which included hazel, green, blue-green, blue, and grey eyes—or dark, including black, dark brown, and light brown eyes. Related ...
With most eye colors, the amount of melanin is consistent across the entire iris—the more melanin, the darker the eye will appear. With hazel eyes, however, varying amounts of melanin exist in ...
Waardenburg syndrome is a group of rare genetic conditions characterised by at least some degree of congenital hearing loss and pigmentation deficiencies, which can include bright blue eyes (or one blue eye and one brown eye), a white forelock or patches of light skin.
Just as you can develop melanoma on your skin from mutated pigment cells, you can also develop it inside your eye, new reports show. Unusual cases of rare eye cancer puzzling doctors Skip to main ...
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