Eye color is a polygenic phenotypic trait determined by two factors: the pigmentation of the eye's iris [1] [2] and the frequency-dependence of the scattering of light by the turbid medium in the stroma of the iris.

Your eye color is one of the things that makes you unique from everyone else on this planet. It can change throughout your lifetime and offer clues to your history and heritage. Understanding how it works can sometimes be a clue to medical conditions or concerns.

Brown is the most common eye color. Individuals with brown eyes have more melanin present, and over half of the people in the world have brown eyes. Gray eyes may be called “blue” at first glance, but they tend to have flecks of gold and brown.

Jul 27, 2019 · While there is a limitless number of hues, shades, richness, and combinations of colors that make up your eye color, most people agree about how many eye colors there are in general. And that number is six: brown, hazel, blue, green, gray, and amber.

Aug 14, 2022 · This article explains why brown is the most common eye color and how certain eye colors are more common in different groups of people. It also discusses the biological and genetic factors behind eye color.

Dec 5, 2017 · While you may share blue eyes with your sibling, how that color appears in your eyes is unique to you. Human eye color is dependent on multiple genes. Scientists have a good understanding of a couple of these genes, which determine the most common eye colors: brown, blue and green.

Sep 29, 2023 · Eye color is determined by a complex interaction of genes. Find out everything you need to know about eye color, common and rare types, and more here.

Mar 12, 2025 · Eye colour, heritable phenotypic (observable) trait determined by pigmentation and light scattering in the iris of the eye. The iris, the coloured part of the eye, is the ring of muscle and collagen fibres around the central black opening of the eye known as …

Aug 30, 2023 · Most people have brown, blue, or hazel eyes, but there are other eye colors too. While some mild health benefits and detriments have been linked to eye color, more research is needed. Overall, it is likely that eye color usually has minimal impact on a person’s health.

Mar 3, 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).