Editing Eye color (section)

===Brown===
{{Redirect|Brown eyes}}
[[File:MyStrangeIris.JPG|thumb|A brown iris]]
Almost all mammals have brown or darkly-pigmented irises.<ref>Brenda J Bradley, Anja Pedersen, Nicholas I Mundy: [https://pubmed.ncbi.nlm.nih.gov/19278018/ Blue eyes in lemurs and humans: same phenotype, different genetic mechanism]  Am J Phys Anthropol. 2009</ref> In humans, brown is by far the most common eye color, with approximately 79% of people in the world having it.<ref name=":0">{{Cite web|last=Debrowski|first=Adam|title=Which Eye Colors Are the Rarest?|url=https://www.allaboutvision.com/eye-anatomy/rarest-eye-color/|access-date=2021-02-04|website=All About Vision|language=en-us}}</ref> 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.<ref name="Fox">{{cite book |last=Fox |first=Denis Llewellyn |title=Biochromy: Natural Coloration of Living Things |publisher=University of California Press |year=1979 |page=9 |url=https://books.google.com/books?id=c2xyxwlm2UkC&pg=PA9|isbn=978-0-520-03699-4}}</ref>

[[File:Human_eye,_anterior_view.jpg|right|thumb|A light brown iris with limbal ring]]

In many parts of the world, it is nearly the only iris color present.<ref>{{OMIM|227220|SKIN/HAIR/EYE PIGMENTATION, VARIATION IN, 1; SHEP1}}</ref> Brown eyes are common in [[Europe]], [[East Asia]], [[Southeast Asia]], [[Central Asia]], [[South Asia]], [[West Asia]], [[Oceania]], [[West Africa]] and the [[Americas]].<ref name="Sulem"/> Light or medium-pigmented brown eyes can also be commonly found in [[Europe]], among the [[Americas]], and parts of [[Central Asia]], [[West Asia]], [[South Asia]], and [[East Africa]]. Light brown eyes bordering amber and hazel coloration are more common in [[Europe]], but can also be observed in [[East Asia]], [[Southeast Asia]], [[North Africa]] and [[East Africa]].
<!--- [[File:225 of 'The Races of Great Britain. A contribution to the anthropology of Western Europe. (With plates and maps.)' (11176801375).jpg|thumb|189x240px|Percentage of dark eyes among British military recruits in the 19th century by region]] --->