The brain sees, not the eyes. This sounds obvious, but very often blurred vision or diopter do not have to do with the eye, but with the brain.

  Blind people see in dreams unless they are born blind.
  Eyes used about 65 percent of the power of the brain, more than any other part of the body.

  Pictures of approximately sends to the brain are reversed vertically and horizontally with respect to what to see otherwise.

  The phrase "Everything is fine and fun until someone loses an eye." originated in ancient Rome, as the only rule in wrestling where everything was permitted except for injuries to anyone's eyes.

. People's eyes are not the most developed eyes in the world. Certain types of shrimp have eyes that can see up to 4 times more colors than humans, and some of them see and ultraviolet color.