On the plus side, blue-eyed people may have a lower risk of cataracts, which is when the lens of your eye (right behind the iris) becomes cloudy and compromises vision, says Dr. Chhablani.

The mesmerizing colors of human eyes—from deep browns to vibrant blues, subtle greens, and rare ambers—result from intricate genetic factors that influence melanin production in the iris. This ...

Blue eye color is actually caused by the Tyndall Effect, a phenomenon similar to the visual trick that makes us perceive the sky as blue. The iris is made up of two layers of cells: the stroma on ...