• I am often told I have gray blue eyes.
  • My eyes are gray, so yes.
  • hazel eyes here they change from deep blue to light bluegrey and somtime's green
  • Eye color is a polygenic trait and is determined by the amount and type of pigments in the eye's iris. Humans and animals have many phenotypic variations in eye color. In human eyes, these variations in color are attributed to varying ratios of eumelanin produced by melanocytes in the iris. The brightly colored eyes of many bird species are largely determined by other pigments, such as pteridines, purines, and carotenoids. Three main elements within the iris contribute to its color: the melanin content of the iris pigment epithelium, the melanin content within the iris stroma, and the cellular density of the iris stroma. In eyes of all colors, the iris pigment epithelium contains the black pigment, eumelanin. Color variations among different irises are typically attributed to the melanin content within the iris stroma. The density of cells within the stroma affects how much light is absorbed by the underlying pigment epithelium. OCA2 gene polymorphism, close to proximal 5′ regulatory region, explains most human eye-color variation. Eye color chart (Martin-Schultz scale) * 5.1 Amber * 5.2 Blue * 5.3 Brown * 5.4 Gray * 5.5 Green * 5.6 Hazel * 5.7 Red * 5.8 Violet Gray eyes have less melanin than blue eyes,[citation needed] even though they are considered a darker shade of blue (like blue-green). Gray eyes are most common in European Russia, Finland and the Baltic States.[citation needed] Under magnification, gray eyes exhibit small amounts of yellow and brown color in the iris. Ultimately there are at least two things that could determine gray eye color. The first is the amount of melanin made. And the second is the density of the proteins in the stroma. A gray iris may indicate the presence of a uveitis. However, other visual signs make a uveitis obvious. Gray iris color, as well as blue, are at increased risk of uveal melanoma. Visually, gray eyes often tend to appear to change between the shades of blue, green and gray; this is because gray eyes are extremely light, as mentioned before. The color change for gray eyes is usually influenced by the lighting and the colors in the surroundings (such as clothes, makeup, etc.). The iris is made up of four layers: * The anterior border layer (the front layer facing out) * The stroma * Two layers of endothelium (at the back of the iris) The double layer is responsible for dilating the pupil and absorbing any stray light that reaches the back of the iris. It is only the first two layers that determine iris colour. The anterior border layer contains melanocytes. Everyone's body contains about the same number of melanocytes, but the amount of melanin in these cells is genetically determined. Melanin absorbs light and is the principle pigment in hair and skin. Differing levels of melanin account for the differences in skin and hair colour between races and individuals. People with dark skin and hair have a generally higher level of melanin than pale, blond people. As a result, people with darker skin and/or hair are more likely to have brown eyes. In the eye, low levels of melanin absorb less light and have a yellow appearance, while high levels look brown. The stroma is a connective tissue layer which contains collagen, blood vessels and the iris sphincter. The iris sphincter is the muscle which constricts the pupil. White light entering the stroma is scattered by the collagen. The collagen absorbs most of the colours apart from blue or grey, these are reflected back by the collagen. The blood vessels and sphincter scatter the light in different ways giving different patterns of flecks. The ring that can sometimes be seen in the iris is the minor iridic circle, which is the artery ring supplying the iris with blood. Freckles and darker patches on the iris are caused by round groups of pigment and are called clump cells. Whether the eye is blue or grey depends on the arrangement of the collagen fibres: fine arrangement causes blue eyes while a coarser arrangement causes grey ones.
  • I was born with em. A curse. People comment on them a lot, Some people like them and others say I look mean or cold because of them. I'm really quite cheerful in real life.

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