About 75 percent of eye color is due to one gene, OCA2. Amber eyes may also contain amounts of very light gold-ish gray. receive communications related to AARP volunteering. It is believed that other genes play a lesser role in eye color by combining with HERC2 and OCA2 to produce a variety of eye colors. We may earn commissions if you purchase something via one of our links. Hazel eyes are more common in Spaniards, North Africa, the Middle East, and Brazil. 45 percent had brown eyes 27 percent had blue eyes 18 percent had hazel eyes 9 percent had green eyes 1 percent had eyes a color not listed above That is, one eye may be green and their other eye brown, blue, or another color. This phenomenon is known as Rayleigh scattering and refers to the dispersion of light over an object after riding its spectrum wavelength. This occurs in humans and certain breeds of domesticated animals and affects less than 1 percent of the world's population. [30][31] Amber eyes should not be confused with hazel eyes. Hazel eyes are due to a combination of Rayleigh scattering and a moderate amount of melanin in the iris' anterior border layer. 5 Mesmerizing Animals With Green Eyes - AZ Animals Hazel Eyes Can Change Color Depending On Environmental Factors, 12. [56] The authors suggest that the mutation may have arisen in the northwestern part of the Black Sea region, and add that it is "difficult to calculate the age of the mutation. Parents can also be carriers for recessive genes. Taylor also reportedly had a double row of eyelashes, a condition doctors call distichiasis, which helped accentuate her famous eyes. Hallie Levine is a contributing writer and an award-winning medical and health reporter. Trauma and certain medications, such as some prostaglandin analogues, can also cause increased pigmentation in one eye. The hazel eye color is primarily due to the combination of a decent amount of melanin and Rayleigh scattering. Hazel eyes are not as common as brown eyes as they contain less melanin, but they could originate from any part of the world. (2017). Theyre often used in the movie industry, and can be a fun way to experiment with different eye colors. The difference between them is how the pigments are spread out. [93] There are also other studies that challenge these findings. [73], Although the deep blue eyes of some people such as Elizabeth Taylor can appear purple or violet at certain times, "true" violet-colored eyes occur only due to albinism. While blue eyes may be rare, they're among the most common eye colors at birth. Hazel eyes have a way of taking after the color of a persons clothing.
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