Fair enough, to each their own. I always thought he was just checking on Luke. Given that we never see this come up again until this most recent film, I find the healing interpretation hard to swallow, but maybe I just need time to digest it.
Edit: I was curious so I found this clip. First he checks Luke's wrist (though his clothes, but hey, this is an actor), he puts his hand on Luke's head and checks his skull, then he has a conversation with Artoo, he puts his hand on Luke's shoulder, then Luke groggily wakes up. Don't see what you see.