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.
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.
Development of Heterochromia
If you've developed a rare condition called heterochromia, your eyes likely have changed color significantly.
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.
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.
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.
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.
Blue rings around the iris are caused by cholesterol deposits in the eye. The deposits are actually white or yellowish but can appear blue. This might sound dangerous, but it isn't. Researchers estimate that this condition impacts anywhere between 20 and 35 percent of people, becoming increasingly likely as you age.
At some point, you've probably wondered what the rarest eye color is. The answer is green, according to the American Academy of Ophthalmology (AAO). Only about 2 percent of the world's population sport this shade.
A blue/white/gray arc or ring around the irises of your eyes is called arcus senilis if you're 50 to 60 years old or older. It's seen as a normal part of aging. If you're younger and you have them, you should see your provider about possible underlying health conditions.
Of those four, green is the rarest. It shows up in about 9% of Americans but only 2% of the world's population. Hazel/amber is the next rarest of these. Blue is the second most common and brown tops the list with 45% of the U.S. population and possibly almost 80% worldwide.
The most likely explanation for a change in eye color is to change the amount of pigment producing proteins made. There are lots of cases where something in the environment changes the amount of protein that is made. The color of a person's clothing can “bring out” their eyes, making them appear a different color.
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.
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.
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.
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.
The cornea is a clear dome over the front of the eye that is usually quite clear as a youth. With aging or high blood lipid levels its clarity may change causing a cloudy appearance that the patient or observer may call "gray." Hence a brown or blue eye may turn gray.
Each parent will pass one copy of their eye color gene to their child. In this case, the mom will always pass B and the dad will always pass b. This means all of their kids will be Bb and have brown eyes. Each child will show the mom's dominant trait.
Did Elizabeth Taylor have violet eyes? These days, thanks to colored contact lenses, anyone can have violet-colored eyes . Taylor didn't come by her purple peepers that way; the first tinted contact lenses weren't commercially available until 1983. Taylor's eye color was the real deal.
Likewise, two brown-eyed parents can have a child with blue eyes, although this is also uncommon.
Melanin is a pigment that darkens the eyes, hair and skin. When babies are born, they don't have melanin in their irises yet. However, they develop more melanin in their first weeks and months of life. This is why you'll see the blue eyes change.
Sudden onset of blue sclera is still no cause for alarm, but an eye exam is recommended. An eye doctor can take a look and determine the cause of the change. If you have any sudden changes in your vision, like blurriness or light sensitivity, or the whites of your eyes have turned yellow, you need to see a doctor.
When I cry my eyes turn green? Apparently it's a case of blood pressure and flow, which alters the colour, not dissimilar to when embarrassment or anger makes your face go red. In embarrassed or excited situation, your blood goes faster through the veins. And then when you calm down, the blood then goes slower.
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.
Both hazel and brown eyes have a normal level of melanin presence at the back layer. At the front layer, brown eyes have a heavy melanin presence. At this layer with hazel eyes, the presence of green is higher than the presence of brown.