You can't buy them yet, which made the system barely usable for me. It comes with an empty frame that accommodates round lenses. I popped the lenses out of an o

You can't buy them yet, which made the system barely usable for me. It comes with an empty frame that accommodates round lenses. I popped the lenses out of an old pair of glasses and ground them to the right size and shape with a belt sander, and it works OK. You can eyeball the size accurately enough to fit snugly in the rubber frame.