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Rather, blue eyes result from structural color in combination with certain concentrations of non-blue pigments. The iris pigment epithelium is brownish black due to the presence of melanin. [54] Unlike brown eyes, blue eyes have low concentrations of melanin in the stroma of the iris, which lies in front of the dark epithelium.
Notable historical figures thought to have heterochromia include the Byzantine emperor Anastasius the First, dubbed dikoros (Greek for 'having two pupils'). "His right eye was light blue, while the left was black, nevertheless his eyes were most attractive", is the description of the historian John Malalas.
Ferrets with Waardenburg syndrome have a small white stripe along the top or back of the head and sometimes down the back of the neck (known as a "blaze" coat pattern), or a solid-white head from nose to shoulders (known as a "panda" coat pattern). Affected ferrets often have a very slightly flatter skull and wider-set eyes than healthy ferrets.
With brown eyes taking an overwhelming lead, all of the other eye colors have lower percentages. According to WorldAtlas , 8-10 percent of the world's population have blue eyes.
By Susana Victoria Perez, Buzz60 If you think you have blue eyes, think again, they are actually tricking you! All eyes are really brown. According to CNN, Dr. Gary Heiting, a licensed optometrist ...
Together, they account for brown, green and blue, but not hazel or grey eyes. Science is still working on how we get those. All blue-eyed people can trace their ancestry back to a single human ...
Bagnasco, G et al. (2024), discovered that the phenotypic traits for a group of Etruscans from 3,000 to 2,700 years ago showed a population with blue-eyes, light to dark brown hair, and pale white to intermediate skin tones. [43]
They can have blue (including aqua), golden (including shades of brown, copper, amber, yellow, and hazel), or green eyes. Furthermore, odd-eyes are allowed; with one of each colour or multiple colours within one eye. [7] [8] The odd-eyed Khao Manee is the rarest variety.