The lens is held in place by the ____. It can change the shape and thickness of the lens to help you focus on objects that are up close or far away. The ____ is the biggest part of the eye and gives the eye it shape. It is filled with a clear, jelly like material called the ____. The ____ is in the very back of the eye. The retina takes the light the eye receives and changes it into ____ so the brain can understand what the eye is seeing. When the image hits the retina, it is actually upside down! The ____ carries the messages from the eye to the brain. The messages it sends to the brain are still upside down but amazingly the brain knows how to flip this image

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