When you look at something you eye does a lot of things. This is so that you can see these things correctly. The image travels through your eye and hits the brain. It start with looking at the image, and when you first look at the image it is upsidedown. In a matter of seconds your eye sees that.
 The image starts at the cornea and flows through the pupil. From there it goes through the Vitreous gel, a water like substance to keep the eye watery. Then it goes to the Retina, the back of the eye. Then the image passes through the optic nerve witch leads to the brain to tell the eye to turn the image right-side-up.



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