Found these glasses in a box of magic accessories I bought at an auction. They have no markings, and I haven't been able to find anything similar online. I was hoping someone knew what they were.
Thanks very much in advance.

https://www.dropbox.com/s/x90p7j8dyhebmg......jpg?dl=0

Those appear to be prism glasses. I haven't seen prism glasses in 40 years! Karrell Fox used a pair in his rope routine. I don't remember any of the details. Karrell was doing a cut/restored rope routine. He gave these to the spectator to "help him see where to cut.!?!). The guy couldn't even find the rope due to the prism. Try them on and you'll get an idea.

Thanks Dick. I see exactly what you mean about the lenses being angled to throw off your vision. Appreciate the info!