In the novel Tangerine, Edward Bloor reveals the many cruelties of Erik slowly, beginning with the present, and working backward to the incident where Paul was blinded. This is very effective since Paul is the narrator of the novel. Throughout the novel, Paul gets fragments of memories about the incident, but it isn't until near the end that he is able to piece everything together. Interestingly, the description of the incident comes right after a fit of rage in which he vandalizes a car.
Erik has a long history of finding a sidekick who will do anything he wants. At the beginning of the novel, it's Arthur. Toward the end, it was Vincent Castor. This is revealed when Paul finally puts the pieces together after Erik's fit of rage to complete the memory of what happened to him. He describes it his entry dated Friday, December 1. He remembers that Erik and Vincent vandalized a wall in a development they lived in called Silver Meadows. Erik and Vincent believe that Paul told adults that they vandalized the wall, and to get revenge, Erik held Paul down and pried his eyelids open while Vincent sprayed paint into them.
As this section of the novel continues, Paul confronts his parents with the knowledge of what happened to him. They are shocked that he remembers. They've told him all his life that he stared at an eclipse too long. It really is an exciting and satisfying conclusion from that point on in the novel.