Two month old doesn't follow objects with eyes?

My two month old won't react to anything that you put over his head for him to follow, he follows things with sound, but he moves his whole head, we had his hearing checked and it was perfect before discharge, but unfortunately they don't check eye sight... When you grab something that is of a bright color and put it in front of his eyes, he doesn't follow its movement, same with anything else such as his pacifier or his bottle both which he loves. I'm worried he can't see.