In dreams, your eyes can suffer an array of afflictions because, in waking life, we all have an array of issues or behaviors that keep us from our focus, that sway our opinion or that keep us from opening our psychological eyes to see what is really going on. read more
When you look at a banana, the wavelengths of reflected light determine what color you see. The light waves reflect off the banana's peel and hit the light-sensitive retina at the back of your eye. That's where cones come in. Cones are one type of photoreceptor, the tiny cells in the retina that respond to light. read more