Green is the rarest eye color, according to the American Academy of Ophthalmology (AAO), found in just 2 percent of the world ...

For most of human history, green eyes didn’t exist. Understanding why they do now means rethinking what we know about ...

Medically reviewed by Johnstone M. Kim, MD Key Takeaways Gray and green eye colors are the rarest in the U.S., although extremely rare red color can occur with albinism.Eye color is determined by the ...

Cat-like eyes show up in searches everywhere. If the internet is this obsessed with eye color, how rare are green eyes in humans? They’re uncommon enough that seeing them still feels like spotting a ...