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

By stimulating thousands of individual cone cells, researchers made volunteers see a blue-green color of "unprecedented ...

Just when you think you've seen it all, researchers claim to have developed a way for people to see a color the human eye has ...

Through natural selection, different types of eyes have emerged ... only 364,000 years would have been needed for a camera-like eye to evolve from a light-sensitive patch.

these horsefly males have two different sized ommatidia (the photoreceptor units that form insects' compound eyes). The larger ommatidia at the top of the eye are more sensitive to UV light, and help ...