Heterochromia is having different colors in each eys. Heterochromia occurs to 6 in 1000 people. Its not a diseases so it is harmless, does not occur any problems with the vision so its doesn’t need any treatment.
Heterochromia can be caused by genetical heterochromia means it can be act during birth or he/she will have on their life. There are 3 types of Heterochromia.
Complete heterochromia- One iris is completely different than the other one.
Centre heterochromia- Inner ring area is different than outer area of iris
Partial heterochromia- One part of the iris is different than the other part of the area.