The Way of Light

     It takes a lot of travel for the light to go into our brain. Once it gets to the brain we are able to see the image, that the light was reflected by. First an object reflects light into the atmosphere. Then that light hits our Cornea. After that it goes into our iris. From the Iris it goes directly into the Pupil. As the pupil gets the light, it is passes through our lenses. Our lenses pass down the image or light into the optic nerve. The optic nerve leads to the brain. So since it leads to the brain, the brain now has the light.
    As soon as the brain sees the light it starts forming an image. That image is backwards. So in order to see it the brain has to turn it upside dow, so that we are able to see perfect and clear image. Some  people may not see the image clear by themselves. So they need Glasses. With glasses it is the same process. Only now though you are using an extra lens to see what normally other people see without glasses. 
     This is the way that light enters our eyes, so that we are able to see an image that is there. Consider this the next time you wonder how we are bale to see things! So as soon as the light goes into the optic nerve your brain is getting ready to interpret the light of signal. This is the actual reason we see things. It has to go to this process.