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24 Σεπ 2024 · What Causes Brown Eyes? Just like skin and hair color, melanin determines your eye color. Melanin resides in the iris, the circular “colored part” of the eye. Because melanin is a brown pigment, all eyes are technically brown. Some are lighter than others because they have less melanin; brown eyes have more.
27 Φεβ 2019 · What causes brown eyes? Even though there are different eye colors, including less common blue eyes and green eyes , there is only one type of eye color pigment. The amount of this pigment (called melanin ) in the iris of your eye determines the color of your eyes.
7 Απρ 2017 · People with brown eyes have a lower incidence of eye cancer, macular degeneration and diabetic retinopathy. Ophthalmologists are not exactly sure why, but believe that melanin pigment may give brown eyes more protection.
18 Μαρ 2020 · Brown eyes are caused by high melanin content in the iris, which varies by geography and genetics. Brown eyes have health benefits and may be more trustworthy, but also have some drawbacks and risks.
In humans, brown is by far the most common eye color, with approximately 79% of people in the world having it. [28] 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. [29] A light brown iris with limbal ring
5 Απρ 2023 · Causes could include: Pigment dispersion syndrome. This condition results in pigment releasing from your iris, which causes atrophy of it and can lead to blurred vision and glaucoma. (On a related note, medication for glaucoma also may lead to eye color changes.) Pseudoexfoliation syndrome.
4 Μαρ 2019 · Brown is the most common eye color worldwide. There are many shades of brown eye color. Also, the prevalence of eye colors varies geographically. Most people in Africa and Asia have dark brown eyes. In the United States, about 40% of the American population has brown eyes (all shades included).
