This article is brought to you by our exclusive subscriber partnership with our sister title USA Today, and has been written by our American colleagues. It does not necessarily reflect the view of The ...

Our ability to see with color vision depends on the presence and function of light-sensing pigments in the cones of our eyes. Color blindness, or color vision deficiency, happens when one or more of ...

Eye color genetics is complex, with multiple genes from each parent determining a person's eye color. Scientists once believed a single gene controlled eye color, but research shows that more than 50 ...