Think of magical healing abilities being on a scale, from the types of things that a walk-in doctor could fix in an hour (abrasions, rashes, coughs, etc) to what surgeons could fix; this should approximate the difference between upgraded healing magic, and non.
Things they can't fix, are things our doctors can't fix, chronic illnesses, and things specifically noted that would take a quest to fix.
So something like entropion seemed fixable by a healer, to me.