Heterochromia: Different-Colored Eyes - How Does This Happen?

Heterochromia is when someone has eyes that are two different colors, like having one blue eye and one green eye.

Imagine you have a box of crayons. One side of the box has all the blues, and the other side has all the greens. Now imagine your eyes are like those crayons, sometimes, they pick up colors from both sides of the box!

This can happen because of special cells in the eye called melanocytes, which make color. If these cells work a little differently in each eye, one eye might be darker or lighter than the other.

Sometimes, this happens when you're born with it, like getting two different crayons from your box right at the start. Other times, it can happen later on, maybe because of an injury or something that changes how the color-making cells work in one eye.

It’s kind of like if you had a cookie jar that gave you chocolate chip cookies in one hand and sugar cookies in the other, both are delicious, but they look different! Heterochromia is when someone has eyes that are two different colors, like having one blue eye and one green eye.

Imagine you have a box of crayons. One side of the box has all the blues, and the other side has all the greens. Now imagine your eyes are like those crayons, sometimes, they pick up colors from both sides of the box!

This can happen because of special cells in the eye called melanocytes, which make color. If these cells work a little differently in each eye, one eye might be darker or lighter than the other.