Pearl has one brown eye and one blue eye. Amiel says to her that this means "tu eres de dos mundos. You are of two worlds." Pearl's uncle says it means that she can see fairies and peaceful ghosts.
But what is it exactly?
Heterochromia simply means a difference in coloration and is caused by a relative excess or lack of melanin. The term is sometimes used to describe distinct differences in hair or skin color, but most commonly refers to the coloration of the iris.
Complete heterochromia is when the iris is a different color entirely. Partial heterochromia is, as it sounds, when only a part of the eye is different. Heterochromia is most often an inherited condition, but it can also be the result of mosaicism (two populations of cells with different genotypes) or the result of an injury or disease. Like both Pearl's uncle and Amiel, some people and cultures have credited the two color phenomenon with powers such as having the ability to perform ...