Once all of the different parts of the eye are identified how exactly do those parts work together in order for us to be able to see? Images that we see are all made up of light reflected from the objects we look at.

 

Light enters through the cornea, then the pupil controls how much of that light will enter the eye by changing its size. Next light will pass through the lens and focus on the retina. The image on the retina is actually upside down because the front part of the eye is curved. However the brain will eventually turn that image rightside up. The retina has a very complicated job. Its job is to turn light into electrical impulses that the brain will understand. Only the back of the retina is light sensitive and it is full of photosensitive cells called rods and cones. There are 3 types of  cones; red, green, and blue. Each colour of cones responds to a different wavelength of light. Cone cells allow us to see coloured images in detail. Rods are sensitive to light not colour. Cones are the reason we have night vision. After the retina turns the light into electrical impulses.The impulses are carried up to the brain through the optic nerve. This is why we are able to see images clearly.