They say the eyes are "the window to the soul" and there's certainly much to be told about the enigmatic complexity of their varied colors. Dr. Rupa Wong, a board-certified ophthalmologist who owns ...

Have you ever locked eyes with someone and wondered how rare their eye color is? While some people have striking blues or deep greens, the truth is that most of the world shares just a few dominant ...

That mirror you look into every morning is revealing more about your pain tolerance than you ever imagined. The same genes that determine whether you have brown, blue, green, or hazel eyes are also ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

Wild cats showcase a stunning diversity of eye colors, proving a mystery for researchers because most wild species are known to have narrow eye color schemes (usually black, brown or yellow). Eye ...