How Do You See?

• First, light bounces off objects all around you and enters your eye.

• Then the light passes through your pupil and lens to the retina at the back of your eye.
  
  
• The retina contains light sensitive cells called rods and cones that change the picture into nerve signals, these are passed through more cells and finally to the optic nerve.
  
  
• The optic nerve carries the nerve signals to your brain.
  
  
• Finally, your brain reads the signals and tells you what you're seeing.