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The scale consists of 20 colors [97] ranging from light blue to dark brown-black, corresponding to natural eye colors caused by the amount of melanin in the iris: [98] [99] Normal eye colors range from the darkest shades of brown to the lightest tints of blue. [14]
The scale consists of 20 colors [1] (from light blue to dark brown-black) that correspond to the different eye colors observed in nature due to the amount of melanin in the iris (in this case, the lower the number, the lighter the eye color): [2] [3] 1-2: blue iris (1a, 1b, 1c, 2a : light blue iris - 2b: darker blue iris) 3: blue-gray iris
The original Martin scale, summarized below, consists of 16 colors (from light blue to dark brown-black) that correspond to the different eye colors observed in nature due to the amount of melanin in the iris. The numbering is reversed in order to match the Martin–Schultz scale, which is still used in biological anthropology. In this case ...
Typically, we're used to seeing blue or brown eyes—eyes that are all one color. Hazel eyes spice it up with their mix of hues and flecks of colors. The moderate melanin content in hazel 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 ...
"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. [ 33 ] [ 34 ] [ 35 ] A more recent example is the German poet, playwright, novelist, scientist, statesman, theatre director, and critic, Johann Wolfgang Goethe .
In humans, brown is by far the most common eye color, with approximately 79% of people in the world having it. [34] Brown eyes result from a relatively high concentration of melanin in the stroma of the iris, which causes light of both shorter and longer wavelengths to be absorbed. [35] A light brown iris with limbal ring
Unlike other primates, all human beings have eyes with a distinct colour contrast between the white sclera, the coloured iris, and the black pupil. This is due to a lack of pigment in the sclera. Other primates mostly have pigmented sclerae that are brown or dark in colour. There is also a higher contrast between human skin, sclera, and irises.