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Central heterochromia is also an eye condition where there are two colors in the same iris; but the arrangement is concentric, rather than sectoral. The central (pupillary) zone of the iris is a different color than the mid-peripheral (ciliary) zone. Central heterochromia is more noticeable in irises containing low amounts of melanin. [32]
The total number of genes that contribute to eye color is unknown, but there are a few likely candidates. A study in Rotterdam (2009) found that it was possible to predict eye color with more than 90% accuracy for brown and blue using just six SNPs. [16] [17] In humans, eye color is a highly sexually dimorphic trait. [18]
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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 ...
You may have heard people with hazel eyes stating that their eyes change colors, and there is some truth to this phenomenon—hazel eyes can actually appear to change color depending on lighting ...
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 ...
This is a list of notable people who have been documented as having heterochromia iridis, a condition when the irises have different colours. People who are frequently mistakenly thought to have heterochromia are not included, but may be listed in the Notes section.
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 ...