![]() In fact, nearly all eye colours are determined by how much brown-coloured pigment called melanin is contained in cells in the iris. In addition to controlling the size of the pupil and therefore the amount of light that enters the eye, the iris contains pigmented cells that determine eye colour.īut here's where it gets interesting: Though there are many different eye colours, there are surprisingly few types of eye pigments. The structure within the eye that is responsible for eye colour is called the iris - the thin, circular structure that surrounds the pupil. This is because many different genes are involved in the inheritance of eye colour, and different interactions and levels of expression of these genes can alter eye colour outcomes in children. Genetics play a role in determining eye colour, but it's nearly impossible to predict with 100% certainty the eye colour of a child simply by knowing the colour of his or her parents' eyes. In Iceland, a survey of the population revealed 89% of women and 87% of men have blue or green eye colour. ![]() However, the prevalence of green eyes varies significantly by geographical region and country, with the greatest concentration in Northern and Central Europe.įor example, in Edinburgh, Scotland, it's estimated that 29% of residents have green eyes (57% have blue eyes and only 14% have brown eyes). Reliable statistics of the distribution of eye colours are difficult to find, but some sources put the worldwide prevalence of green eyes at only 2%. Part of the appeal of green eyes may be their rarity. Here are the preferences, from more than 66,000 responses: In an online survey, asked readers which eye colour they considered most attractive. Though the colour green often is associated with envy (even a character in Shakespeare's Othello refers to jealousy as "the green-ey'd monster"), many people consider green to be the most attractive eye colour. If you have green eyes, you have good reason to be happy about it. By Amy Hellem reviewed by Gary Heiting, OD
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |