Archgon GL-B196-GR Advanced Computer Eyewear Anti Blue-Light GlassesUV Protection Half Rim with Crystal Lens-Stainless Frame Stylish and comfortable eyewear that protects your eyes Special coated lens blocks harmful blue-light emitted from the screen of your computer, cellular phone, TV, and other electronic devices;help reduces symptoms of dry eyes, strain, and headache from long hours of viewing Coated lens reduces flare and has minimum effect on color accuracy, designed for professional as well as for serious hobbyist FDA registered. Non-prescription lens. Comes with carrying pouch and cleaning cloth Is it effective? See product video at https://youtu.be/W82EMnuPJrg