100 Million
Some two percent of women possess a rare and genetic mutation. This particular mutation allows for the individual to possess an extra retinal cone in each eye. Meaning, they have the ability to see 100 million colors. Insanity or really freaking cool?

100 Million
Eyepatch.
There’s a reason pirates wore eye-patches but not why you think. It was to allow their eyes to quickly adjust from going above to below deck. One eye was always trained for the bright light while the other eye was intended for dim light, respectively.

Eyepatch.