In most people, the answer is no. Eye color fully matures in infancy and remains the same for life. But in a small percentage of adults, eye color can naturally become either noticeably darker or lighter with age. What determines eye color is the pigment melanin.
Conclusion: Most individuals achieve stable eye color by 6 years of age. However, a subpopulation of 10% to 15% of white subjects have changes in eye color throughout adolescence and adulthood in the eye color range that can be expected to reflect changes in iridial melanin content or distribution.
In general, it's rare for eyes to change color. They may appear to change when your pupils dilate or shrink, but this occurs because the pigments in the irises come together or spread apart. In some cases, eye color can darken slightly during puberty or pregnancy, or as you reach your later years.
It could take about a year for your baby's eye color to come in, but any change in color will usually slow down when your little one is about 6 months old. In some cases, the color change can continue for several years to come.
The bottom line is that the types of changes you all describe are widely reported. For example, in one study, 15% of Caucasians had some lightening or darkening in eye color at puberty.
In as much as 15 percent of the white population (or people who tend to have lighter eye colors), eye color changes with age. People who had deep brown eyes during their youth and adulthood may experience a lightening of their eye pigment as they enter middle age, giving them hazel eyes.
If the color of one or both eyes changes suddenly and significantly, see an eye doctor as soon as possible. It is particularly dangerous for eyes to change from brown to green, or from blue to brown. Major changes in the iris' pigment can indicate illness, such as: Horner's syndrome.
Green Eyes
Green is considered by some to be the actual rarest eye color in the world, though others would say it's been dethroned by red, violet, and grey eyes.
In most people, the answer is no. Eye color fully matures in infancy and remains the same for life. But in a small percentage of adults, eye color can naturally become either noticeably darker or lighter with age.
The genetic switch is located in the gene adjacent to OCA2 and rather than completely turning off the gene, the switch limits its action, which reduces the production of melanin in the iris. In effect, the turned-down switch diluted brown eyes to blue.
Minor Changes Are Common
For example, long-term sun exposure may cause your eyes to darken slightly, while a small percentage of Caucasian people's eyes lighten as they age. For the most part, though, your eye color will not actually change, and significant changes may be a sign of a larger problem.
Human eyes come in many colors — brown, blue, green, hazel, amber, and even violet or gray eyes. Gray eye color is one of the loveliest and most uncommon, a trait shared by only 3% of the world's population.
As you grow up, the melanin level increases around your pupil, making the eye darker. However, 10-15% of Caucasian eyes change to a lighter color as they age, as pigment in the iris changes or degrades.
Natural Age-Related Eye Color Changes
As they are exposed to light, melanin production increases, causing the color of their eyes to shift. However, eye color changes can also occur as a person ages. Those with lighter color eyes – especially Caucasians – may see their eyes lighten over time.
A blue and a green-eyed parent will have all hazel-eyed kids. This is one of the reasons I like the modifier gene explanation so much. It can help explain how green and blue-eyed parents might have hazel-eyed kids.
Unfortunately, no. Just like your hair and skin color, the color of your iris is genetic. That means that unless you break down your genetic code or cell structure, your eye color cannot be changed permanently without surgery.
There are plenty of blue-eyed Asians. This probably happens when the traditional blue-eyed allele comes into a family from a (possibly very distant) European ancestor. Blue eyes then resurface in a child generations later if they inherit the allele from both parents.
We found that green is the most popular lens colour, with brown coming in a close second, despite it being one of the most common eye colours. Although blue and hazel are seen as the most attractive eye colours for men and women they are surprisingly the least popular.
As previously mentioned, exposure to light causes your body to produce more melanin. Even if your eye color has set, your eye color could slightly change if you expose your eyes to more sunlight. As a result, your eyes might appear a darker shade of brown, blue, green, or gray, depending on your current eye color.
Aside from being well-known figures to many people across the world, all three of them also have an eye condition known as Heterochromia, or two different colored eyes. Heterochromia is fairly uncommon, occurring in less than 1 percent of the population.
Yes, natural purple eyes are possible. There are many different shades of blues and greys out there and many in-between colors. Although very rare, some people's natural pigmentation can even be violet or purple in color.
Violet Eyes
This color is most often found in people with albinism. It is said that you cannot truly have violet eyes without albinism. Mix a lack of pigment with the red from light reflecting off of blood vessels in the eyes, and you get this beautiful violet!
Eye color is directly related to the amount of melanin in the front layers of the iris. People with brown eyes have a large amount of melanin in the iris, while people with blue eyes have much less of this pigment. A particular region on chromosome 15 plays a major role in eye color.
5–Black Eyes
There's an eye disorder known as aniridia which makes the eye appear to have “no iris.” In truth, there is a small ring of iris tissue but it is so small and the pupil is so large that it can look like the eyes are completely black. It is due to a chromosome mutation.
A technique to change the eye color in a safe and effective way by applying laser to the iris, without surgery. The laser diminishes the density of the iris pigment, lightening the eye color. The procedure is done in several sessions: each session lasts around 10 minutes for both eyes.