Which Colored Eye Is Common in Türkiye?

The diversity of eye colors in Türkiye has a wide range due to its geographical location and the influence of various civilizations throughout history. However, in general, brown eyes are the most common. Still, it is possible to encounter different eye colors in different regions of the country. This diversity reflects the rich cultural heritage of the country.

Brown eyes are known to be the most common eye color in Türkiye, as they are worldwide. This is due to the fact that brown eye color is genetically dominant. Since Türkiye is located at the intersection of European and Asian gene pools, many people may have a variety of eye colors.

Although brown eye color is widespread, blue and green eye colors are also seen at a significant rate in Türkiye. Especially in the Black Sea and Aegean regions, lighter eye tones are more common.

What Is Eye Color and How Is It Formed?

Eye color is determined by the pigmentation of the iris, the colored part of the eye. The iris can appear in different colors depending on the amount of melanin it contains. Melanin is a pigment that also determines skin and hair color. As the amount of melanin increases, eye color becomes darker; as it decreases, lighter tones appear.

Genetic factors play a major role in the formation of eye color. Genes inherited from parents determine an individual’s eye color. According to Mendelian laws, genetic combinations are considered when predicting a child’s eye color. However, since eye color is a polygenic trait, it results from the interaction of multiple genes rather than just two.

Another factor affecting eye color is light refraction. The structure of the iris can cause light to refract at different angles, which may lead to eye color being perceived in different tones. This is especially true for light-colored eyes.

The Most Common Eye Colors: Blue, Green, Brown

The most common eye color worldwide is brown. Brown eyes are genetically dominant and therefore frequently seen in many regions. Türkiye is also influenced by this genetic trait, making brown eyes the most common in the country.

Blue eyes are seen in eyes that contain less melanin and usually result from a combination of recessive genes. In some regions of Türkiye, especially in the Black Sea region, it is possible to encounter people with blue eyes. This can be explained by historical migration routes and the mixing of different gene pools in the region.

Green eyes are found in only about 2% of the world’s population and are considered rare. However, in Türkiye, green eyes can be seen especially in Central Anatolia and the Aegean regions. Green eye color occurs when melanin levels are moderate and light refraction plays a role.

Genetic Factors of Eye Color

Eye color is a polygenic trait in genetics, meaning it is determined by the interaction of multiple genes. The main genes responsible for eye color are known as OCA2 and HERC2. These genes control the production and distribution of melanin. The OCA2 gene directly affects the amount of melanin in the iris and therefore determines the darkness of the eye color.

According to Mendelian laws, genes are classified as dominant and recessive. Since brown eye color is a dominant trait, if one parent carries the brown eye gene, the likelihood of children having brown eyes is high. However, blue and green eye colors are recessive traits and usually appear when both parents carry these genes.

Although genetic factors are decisive in eye color, other elements such as environmental factors and age can also affect how eye color is perceived. For example, it is common for babies to be born with blue eyes, but as melanin production increases over time, eye color may darken.

Eye Color Diversity in Different Regions of Türkiye

Türkiye is rich in eye color diversity due to its geographical location and its history as a crossroads of many different cultures. Different eye colors can be found in different regions of the country, reflecting genetic diversity.

The Black Sea region is one of the areas where blue eyes are more common. This can be explained by the region’s location on historical migration routes and the mixing of different gene pools. Similarly, the Aegean region is another area where lighter eye colors are more frequently seen.

In Central Anatolia and Eastern Anatolia, brown eye color is more common. The genetic structures of communities that have historically settled in these regions have influenced eye color diversity. Türkiye’s genetic mosaic creates a unique situation in terms of eye color diversity.

Eye Color Change: Is It Possible?

Since eye color is genetically determined, it is not possible to change it naturally. However, some medical and cosmetic methods can allow temporary or permanent changes in eye color. For example, colored contact lenses are widely used to temporarily change eye color.

Changing eye color through surgical procedures such as laser iris pigmentation is possible, but such procedures carry risks and may have permanent negative effects. Therefore, surgical interventions for changing eye color are generally not recommended and should only be performed by specialist doctors.

In conclusion, although eye color cannot be changed naturally because it is a genetic trait, temporary changes can be made through cosmetic solutions. However, such interventions should be carefully evaluated.