Heterochromia refers to a harmless genetic anomaly resulting from an uneven distribution of pigment within one or both eyes.

Medically reviewed by Johnstone M. Kim, MD Of the four main eye colors (brown, blue, green, and hazel), the rarest eye color ...

Clear vision is what allows us to experience the world in vivid detail and navigate our daily lives with ease. But there are hundreds of eye diseases, from common conditions such as cataracts ...

There are four main types of uveitis, depending on where the inflammation happens. The most common kind is called anterior uveitis, which affects the front part of your eye, including the iris and ...

There are three different types of cone cells which produce colour vision. The amount of light entering the eye is controlled ... by the muscles of the iris.

That coloured circle is called the iris and the black spot in the middle is the pupil. This is the part of the eye that lets the light in. Lights out please! When it’s dark, muscles in the iris ...