Apr
24
Why Your Eyes are that Color
Filed Under Eyewear Knowledge
Do you wonder why blue-eyed people need strong, Ray-Ban like sunglasses? Do you ever wonder why your eyes are blue, green, brown or hazel or why your eyes sometimes change color? Well, eye color is a trait that is determined by the type of pigment in the iris.
Human eyes, unlike many bird, fish and other mammal eyes, get their color from the melanin content in the iris and the epithelium pigment as well as the density of pigment in the iris. Sometimes you will see variations in the eye, especially in green, blue and hazel eyes, this is because of a variation in the distribution of pigment within the iris. Think of it as a splotched, round painting using various thicknesses and colors of paint.
Eye color is, more than anything, a genetically determined trait coming from both parents. The most common eye color is brown, the majority of people in Asia have this color, along with black or brown hair (also the most common). The least common eye color is green, though some rare exceptions exist where children have purple or black eyes depending on genetic mutations in both parent genes.
Many parents notice that children born with blue or grey eyes have grown to have brown or darker blue eyes, this is because many Caucasian children are born without eye pigment and develop that (along with melanin) later in life.
Blue eyes are becoming rarer as people are marrying outside their ethnic groups. Blue eyes are a genetic recessive gene that can be overridden by a dominant gene like brown eyes or brown hair color. As a result, in the USA and Canada, blue eyes are becoming lesson common (and green eyes are extremely rare). For people with blue, grey or green eyes, stronger sunglasses may be needed as paler eyed people complain of eye sensitivity and pain from sunlight, which is caused because the density in the iris is weaker than in brown counterparts. We recommend wrap around or full-sun sunglasses like Dior or Versace.
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