The image patterns overlap because they all contrast the overall message of the story with the outcome. The whole story is about how love affects this boy, but then eventually he comes to his senses. Blindness and sight relate to light and dark because blindness is the dark and sight is the light. The narrator sees all these great and bright things about the girl he is admiring, however, he is completely blinded by the more hidden aspects of her, like how she does not feel the same about him. These overlaps suggest that they are all themes of the story that play together to create the overall meaning.