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

Brown eyes contain a lot of melanin, while green and hazel eyes contain a bit less. And blue eyes contain very little melanin in the front layer of the iris. That results in more blue light ...

Brown and hazel eyes get their color from melanin ... notice that their eye color changes depending on surrounding light. Green and hazel eyes are a mixture of pigment color and color from ...