❓ why
Why do some people have one blue eye and one brown eye?
Human BiologyEye Color
Quick Answer
This happens because pigment distribution in the iris is different in each eye or partly absent in one of them. The condition is called heterochromia.
The Full Story
Eye color depends mainly on how much melanin is present in the iris and how it is distributed. In heterochromia, the two eyes can have different amounts of pigment, or a single iris can have two colors. It can be inherited, but it can also result from injury, inflammation, or certain medical conditions. The trait is often harmless and may be present from birth.
Key Facts
1.The condition is called heterochromia
2.Eye color depends mainly on iris melanin
3.It can be inherited or acquired later in life
YouTube Angle
Suggested video title for this topic:
"Why are two eyes sometimes two different colors?"