AliMed Deluxe Prism Glasses fit over existing prescription glasses. The perfect solution for those who like to read in bed or watch TV, without getting a neck cramp or eyestrain. Lie on your back with your head upon the pillow as normal, and you"ll be able to read a book or watch TV while the prism turns your angle of view 90 degrees. Approved by optometrists and ophthalmologists Case included Frame fits over regular glasses Read or watch TV while lying down MRI safe