Information on Heterochromia

Heterochromia is a medical condition where the iris of one eye is a different color than the other eye or the iris of a single eye contains two separate colors. This occurs as a result of a difference of concentration of melanin, which is the pigment that colors the iris.

It is rare for this to occur in humans, but is often seen in animals. Siberian huskies are particularly prone to this condition as are some breeds of cats and horses.

Heterochromia is rarely a cause for concern but in rare cases, may be a symptom of a disease or underlying medical condition.

Causes of Heterochromia

This condition may be present at birth because of a hereditary disposition. A routine physical exam is performed on infants that have heterochromia to rule out any other possible diseases that may be causing the difference in eye color.

Certain types of eye drops that are used to treat glaucoma may cause a color difference in the eyes.

Heterochromia in children and adults can be caused by an injury to the eye that causes bleeding or inflammation. This condition can also spontaneously occur as a result of a developing tumor in the eye or Wardenburg syndrome which causes hearing loss.

People that develop heterochromia suddenly should schedule an appointment with their physician to rule out the possibility of glaucoma.

If another medical condition is suspected, additional tests will be run including blood work and chromosome studies.

Heterochromia Treatment

There is no treatment for heterochromia; patients may choose to wear colored contact lenses if the condition becomes an aesthetic concern.

Sources:

University of Maryland Medical Center