Despite our best efforts, back pain can sometimes confine you to bed (or to sleeping on the floor). That's when these prism glasses come into their own. The Bedglasses turn the world through 90 degrees and you can watch television, read books or just watch the world go by without having to lift your head. And, for a more novel use, you can even wear them upside down and see what is directly above you. Made to high optical standards, they can also be worn over a normal pair of spectacles.