Did you know that each eye have a blind spot? It is a small area that is less visual cells and less nerves. Its existence can prove the following experiment. More in Comment
Did you know that each eye have a blind spot? It is a small area that is less visual cells and less nerves. Its existence can prove the following experiment: Close your left eye and use right to see the wheel on the left side of the screen. Then slowly began to defy your head away from the screen. During distancing the cross on the right side of screen disappears for a while. At this point you are watching cross using blind spot of the right eye :)