Imagine seeing someone with odd-colored eyes: blue on one side, brown on the other. Mesmerizing, isn't it? This phenomenon has a name: heterochromia. If you've ever heard of this particularity or ...

Heterochromia is a phenomenon that occurs when a person's irises are different colors. This condition is not particularly common. In fact, heterochromia can be partial, meaning tha ...

Fill in ONE circle only for each. (4 marks) (i) Congenital heterochromia is a common eye condition. (ii) It is rarer in China to have different coloured eyes than in the rest of the world.