Vision may not involve creating an inner model of the world in the brain.
There may be more to it than not getting enough sleep.
Have you ever been staring into space, or gazing up at a clear, blue sky and suddenly noticed clusters of tiny dots and swirls?
Want to stand out in the crowd? Find out what gives fluorescent colors their bright glow.
Each year, three million people have their eye lenses replaced with plastic ones. Artificial lenses are fine, but what if people could regrow their own?
Watch our nearest planetary neighbor 'transit' across the sun on Tuesday. You're going to want to some good eye protection.
Scientists tested eighteen reindeer with light, and found that their eyes responded to both visible light and ultraviolet.
This Moment of Science is going to report some interesting things that our pupils can reveal.
When we are in a fairly dark room, or outside at night away from lights, we can still see, but we can't see the colors of things very well. Why is that?
To interpret a barrage of information, sharks have developed a relatively large and complex brain...