Non-Magnetic Prism Glasses allow the patient to see the room outside the bore of the magnet during their scan, allowing a companion or scenic picture to be viewed. A simple and cost effective comfort measure to be used alone, or in conjunction with a sound system for ultimate relaxation. Features: Prism Angle remains fixed in either position s no viewing angle adjustment is required. Prisms do not reverse the image so it is possible to see a mural, calming poster or projection screen TV. Frames fit over prescription glasses. 670103