[Ah. There's a moment where he almost walks away and looks for John or someone else better equipped to deal with a child's fear, but he doesn't. He crouches down to put himself more on Kid's level.]

That's sensible, having had a traumatic experience with your eye, being wary is natural. It is a mark of bravery to be able to face such a fear for necessary reasons. John is a competent surgeon, it would be sensible to let him take a look.