Iris tattooing and implants can give you a whole new look, but experts urge caution due to complication risks.

A new surgical procedure to permanently change eye color is gaining traction in the U.S. But many ophthalmologists fear ...

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 ...