Blue eyes contain very little melanin. Their color doesn't come from pigment at all but from the scattering of light within the iris, a physical effect known as the Tyndall effect, a bit like the ...

What Makes Eyes Different Colors? ‌The colored part of the eye around the pupil is called the iris. It has a front and back layer. The front layer is called the stroma and is responsible for the blue, ...

As an optometrist, Dr. Ray Corbin-Simon’s job is to make sure her patient’s eyes are healthy. So she was taken aback when one patient recently told her she’d started using eye drops in hopes of ...