Using an experimental technique called "Oz," researchers stimulated the human retina such that people saw a brand-new color.

Do you really know what lies behind these unique colors? Dive into the captivating world of heterochromia, where genetics, rarity, and charm intertwine. Heterochromia is a variation in iris ...

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

Look at those peepers! Joseph, a white Scottish Fold cat from Saint Petersburg, Russia, couldn't be more endearing with his different-colored eyes — one yellow and one pale blue. Evgenii Petrov ...