Your first step should be to take care of your child if he feels any discomfort. Take lots of pictures of your vehicle and any injuries either of you sustain which may show up in the next couple of days. Report the accident to your insurance carrier. Complete the accident report.
Your fquestion - whether to take your child to the ER - is not a legal question.
Not enough facts are furnished to provide a very detailed response. However, your son needs to consult with, and probably retina, a personal injury attorney to as well as to continue with his course of medical treatment. We wish hi the best for a full recovery.
Seriously? You have no basis for a lawsuit. If things had been so bad, someone might have addressed the issue at the time. but what possible basis would you have to sue your parents now? Merry Christmas. I assume you are not spending it with your parents.
Despite all your comments about how unfair things have been for you, none of those facts are relevant to executive clemency. You can attempt to get a pardon, but this usually takes decades, can get very expensive, and very few are actually granted. The lawyer who told you it would be impossible had the benefit of far more fact than we have and you should rely on what the lawyer told you. If you have doubts, go speak to a very experienced criminal defense attorney in person Perhaps there is...