Albinism

The amazing eye gets its colour from the light absorbing pigment found at the back of the iris body.

Heterochromia iridis refers to a person who has a different iris color for each eye. Sectoral heterochromia iridis refers to a difference in color within an iris.

Eye color is determined by multiple genes. The eye color genes include EYCL1 (a green/blue eye color gene located on chromosome 19), EYCL2 (a brown eye color gene) and EYCL3 (a brown/blue eye color gene located on chromosome 15).

Albinism is a genetic condition which results in a lack of pigmentation in the eyes, skin and hair.
It is an inherited condition caused by altered genes being passed on from an individual's parents. Various problems with vision and eyesight can result from the condition.