A total inability to distinguish colors (achromatopsia) is exceedingly rare. These affected individuals view the world in shades of gray. They frequently have poor visual acuity and are extremely sensitive to light (photophobia)
"Hazel" eye coloring is sometimes caused by central heterochromia. It's still not particularly prevalent in general, but it's not as rare as one might think.
Heterochromia is a genetic mutation that cannot be passed down to children. It occurs as a defect in meiosis, and it produces an extra gene for eye colour. Alas, there is a greater chance that the child of a person with heterochromia will also get heterochromia, because there is a better chance of the gene mutating. But still, the chance of heterochromia is rare nonetheless.
Complete Heterochromia is rare in humans, but it is common in animals such as dogs and cats.
I would have to completely disagree as well. Central Heterochromia is so common it's not even funny. I have Sectoral (or partial) heterochromia and i have yet to see anyones eyes (in person) that look like mine. I have one full blue eye, and the other eye is brown with a chunk of blue in it.) So to answer your question- Central Heterochromia= definitely common. Have you seen many people walking around with two completely different colored eyes? I have to see even one, but think this - central heterochromia is even rare among that! It signifies abnormally levels of toxin in the body in most cases, but sometimes it's genetic. (I have central heterochromia) I have central heterochromi(genetic)I have three colors actuall. brown in the cener and green outter. but there is also a even darker green ring on the very outside edge of my iris. my dad has full heterochromia one eye is green and one is brown. His green eye also has central heterochromia. newtest3 ---- Hello! I would have to disagree with them. Central Heterochromia doesn't seem to be as rare as Partial or Full Heterochromia. I myself have Central Heterochromia and know a few other people who do as well, whereas I don't know anyone with Partial or Full. And from what I understand of the research I've done, Partial is even rarer than Full. In the people I know with Central Heterochromia, most of them are usually classified as having "hazel" eyes because they have those different colored rings. Now, that's not the case for all people with hazel eyes, but it's very common for them to be misclassified. So in terms of rarity, you have to think how many people in the world have hazel eyes? ~ I guess I'm the odd one then... I have Sectoral and Central heterochromia... My eyes are normally green, but when you look at the, the top half of both of them is brown. They also have a dark grey ring around the outside of them, as I just recently discovered. The odd thing about that, is that my mom had blue/grey-ish eyes, and my dad has hazel ones. Neither my parents, nor their parents have brown eyes.
Approximately 1% of the world's population is estimated to have heterochromia, a condition characterized by having different colored eyes. This can either be genetic or acquired later in life due to injury or disease.
Kate Bosworth has a condition called heterochromia, which causes her to have one blue eye and one brown eye. This is a rare genetic trait that results in a person having two different colored eyes.
the most rare form of the plague was pneumonic plague which was in the lungs rather than the blood and could kill you in upto 3 days.
Heterochromia and driver's license...Hello, as a person with sectoral heterochromia iridius, I just put the dominant color (brown). Most people don't notice anyway. Some licenses now have a "dichromatic" or other box as well, though. In my state they don't have anything for people with heterchromia or sectoral heterochromia. I have heterchromia myself but I just chose the most obvious color because one is a sky blue and the other is light green with a brown streak going downward. People never notice and it really isn't needed because of the low amount of people with noticeable heterochromia.
This condition is known as heterochromia. It can be caused by a variety of factors, including genetic mutations, genetic mosaicism, or conditions like Waardenburg syndrome and Horner syndrome. It is a rare occurrence, but generally does not cause any vision problems.
Sectoral heterochromia, where an individual has two different colors in one eye, is quite rare. It occurs in approximately 1% of the population. The condition can be genetic, a result of injury, or associated with certain medical conditions, but its overall prevalence remains low.
it depends on your point of view. Heterochromia is just a variation in eye color; not harmful.
my good sir, i am asking the exact same question...