I studied the five senses and I learned about the sense of sight. Your eyes are located in your skull. The light available is what tells you how much you are able to see. When the light changes, your pupil gets bigger and smaller. The image you see goes through the pupil into the retina. Then the retina makes a copy. The copy then goes down the optical nerve. Then the thalumas sorts it all out into the visual cortex. The round shape of the eye is what allows us the movement that is so important to the function of the eye. The eye allows us to have the wonderful sense of sight!