What are multiple iris called?

Research has found that eye color can change in rare cases due to injury or genetics. Some people have two different colored irises from a condition called heterochromia. This condition is often caused by injury or trauma to the eye.

How rare is a multicolored eye?

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.

Is heterochromia a birth defect?

Heterochromia can be present at birth (congenital) or acquired. The incidence of congenital heterochromia iridis is approximately six out of a 1,000, although in most of these cases, it is hardly noticeable and unassociated with any other abnormality.

Why do some people have two different colored eyes?

Someone with central heterochromia has different colors within the same eye. Complete heterochromia is when they have two different colored eyes. Heterochromia of the eye is caused by variations in the concentration and distribution of melanin, the pigment that gives color to the skin, hair, and eyes.

What causes black pupils?

Black henbane, or Hyoscyamus niger, is a similar herb containing scopolamine, atropine and hyoscyamine. Venoms of certain snakes, funnel web spiders and puffer fish are additional causes of dilated pupils. These venoms have anticholinergic effects.

What do two different colored eyes mean?

Heterochromia: 2 different colored eyes. Heterochromia means “different (hetero-) colors (-chromia).”. Usually the term is used to describe the condition where a person has different colored eyes — one blue eye and one green eye, for example. Other terms to describe different colored eyes are heterochromia iridis and heterochromia iridum.

Does the color of the iris change with emotion?

When the pupil size changes, the pigments in the iris compress or spread apart, changing the eye color a bit. Certain emotions also can change both pupil size and iris color. That’s why some people say their eyes change colors when they’re angry or loving.