Your Eye You need to know a little bit about how your eyes work. Ultimately, all this hype is about getting the image of something into your eye so it can tell your brain what you are looking at. On the back of your eye is the retina. This is where the image is produced. It is made up of two kinds of cells called rods and cones .
Cones are sensitive to the amount of light entering the eye.
They transmit to the brain the brightness of the image. Rods are sensitive to color. They transmit the colors to the brain. Between the two, you brain will process these impulses and produce a colored image of the light entering your eye. In the front of your eye is a lens with a pupil .