The lens inverts the image upside down and left-right. Nearsightedness or myopia -you bend the light too much because your eye is too long. 70 million Americans suffer from myopia. Before the lens hardens with age, farsightedness can be compensated by accommodation. Here is where light-sensitive cells are, called photoreceptors .
Light stimulates the photoreceptors to have action potentials and release neurotransmitter.
The axons of ganglian cells collect into the optic nerve, which leaves the retina through a hole, which causes a blindspot to appear in vision. A person with this can see things that are still, but are unable to see scenes in motion.