Prism Bed Specs -- Now you can watch TV or read while lying flat in bed. Avoids neck cramps and eyestrain. The perfect solution for those withlimited mobility. Amazing Prism Glasses change your line-of-sight 90-degrees without distortion. The Prism Glasses turn your view to a downward 90-degree angle, eliminating the need for head movement. Perfect for people with limited mobility. Lie on your back with your head on a pillow, and you'll be able to read a book resting on your chest. Avoid Neck Cramps and Eyestrain: Say goodbye to discomfort and strain caused by awkward head positions. Watch TV...