Here it shows the prisoner chained up and a man making shadows on the walls.
Here the prisoner is being unchained.
In this scene, the man making the shadows forces the prisoner outside into the light even thought it hurts his eyes. Eventually the prisoner runs back to the darkness to safety,
In this part of the story the prisoner realizes he can see his own reflection.
At this part of the story the prisoner is able to see his shadows.
By this point the prisoners vision has adjusted to the point where he can now see figures in the dark.