Here we can see the projections from a brain cell. This axon has a long way to go if it thinks it will get to its destination. Some motor axons go from the top of the head to the tip of your toe.
This is a picture of the end of an axon while it is searching for the strongest cell perfumes.
Once the axons find the vision brain cells the light detectors in the eye can send signals to the brain where it can get turned in to images. These axons can guide other axons to the same destinations by sticking together with a cellular Velcro (e.g. Neuro Cell Adhesion Molecules NCAMs). The perfume Velcro system described above is not unique to the eye in fact it is how all of our brain cells connect to where they are supposed to.