Modern Rectangular Style Reading Glasses. High quality spherical lenses provide superb optical clarity. Meets ANZI Z80.3 high UV protection standards. Passed FDA inspection with impact resistance lenses. Standard lenses transmit only about 91% of light to the eye. The rest is lost to surface reflections. Anti-reflection coatings were developed to reduce reflections for camera lenses and have now been applied to these reading glasses. Anti-Reflective coating reduces eye strain – your vision will be clearer, resulting in less need to strain your eyes to focus. AR coating reduces the appearance of glare on your lenses, meaning people can see your eyes clearly. Pass FDA for impact resistance lens 135mm wide / 51mm lens width / 30mm lens height, non spring hinge design. Front of frame are metal and legs are flexible TR90 plastic.