BPG These Bed Prism Glasses are non magnifying reading glasses that allow you to read and watch tv while lying down prone in complete comfort flat (supine) on your back in bed. These Bed Prism Glasses do this with the with the help of multiple prisms bend your view 90 degrees to eliminate the need to bend your neck, they are specifically designed to work when your laying flat on your back or with a slight pillow under the head. They are often used by recovery patients in hospitals or have back or neck problems that prevent full neck movement and limit mobility. Read a book or watch TV without eye fatigue and neck and back pain with the bed prism glasses