What is Heterochromia? Heterochromia means different (hetero-) colors (-chromia). It is a condition in which an individual’s irises are differently colored. (However the term may also be applied to skin and hair, not just irises) *NOTE “Iridis” and “iridium” refer to the iris of the eye. The iris is the thin, circular structure that surroundsContinue reading “Heterochromia”