I had to look that up, but yes that looks correct. Except that, from the diagram, it bends your view by less than a right angle. Opposite vertical direction tho

I had to look that up, but yes that looks correct. Except that, from the diagram, it bends your view by less than a right angle. Opposite vertical direction though. https://en.m.wikipedia.org/wiki/Belay_glasses https://en.m.wikipedia.org/wiki/Belay_glasses