PROTECT YOUR EYES - High Energy Blue Light emitted by electronic devices (such as computers, TV, smartphones) have shown to increase the risk of vision conditions from sore dry eyes to macular degeneration. Maintain healthy eyes by reducing exposure to high energy blue light. IMPROVE PERFORMANCE AND PRODUCTIVITY - Extended exposure to blue light rays may cause fatigue and stress. Filtering out the High Energy Blue Light allows you to focus on your game or task at hand. BLOCKS 90% OF HIGH ENERGY BLUE LIGHT - Vision World Blue Light Shield protects your eyes by filtering out 90% of High Energy Blue Light rays while letting through the less harmful low energy blue light. Pass FDA for impact resistance lens LOW COLOR DISTORTION LENS - Unlike other glasses on the market with heavily tinted lens. Vision World's low color distortion lens is optimised to provides the perfect balance between eye protection and viewing quality. Adult Size - 130mm frame width, 49mm lens width, 24mm lens height, 16mm bridge.