The Welch Allyn is a really top quality instrument. They also make a nice Retinoscope head. I wish I had waited & got one of the new Lithium rechargable batteries though.
Having said that, I hardly ever use it. Maybe only a couple of times per year. It's good for uncooperative kids, bc you can stand back & get a good look at the red reflex.
I don't know how neurologists & neurosurgeons can get a good idea of the fundus using just the direct. What is really amazing is that many moons ago, the early retinal surgeons used to use the direct ophthalmoscope to find & treat peripheral retinal tears. Don't ask me how, but that's amazing.