MRI Fitover Non-Magnetic Prism Glasses For Watching TV Lying in Bed We Ship from Chinadelivery takes 15-25 days Imagine being able to enjoy your favorite magazine, book or TV program while lying in bed. Don't let the unusuallookthese glasses hide their true value. The lenses on these lightweight glasses are prisms that change the normal line of sight without any distortion. You can be flat on your back and still enjoy reading and TV as though the image was straight ahead. They work well over prescription glasses too (fits right over, and we even tested them with bifocals!)