Improves Your Digital Life Using digital products for more than 7 hours a day will expose you to harmful blue rays, resulting in eye strain, blurred vision, migraines and sleep deprivation. The lens technology helps to Improve visual comfort by improving contrast and reducing eye strainEliminates glare with premium ARUltra- light weight frame, fashionable and comfort designValue pack with free eyeglasses case, cleaning cloth, small screwdriver, ear hooks, blue light blocking test kit included Eliminating digital eye strain with blue light blocking lens Long-term exposure to high-energy visible (HEV) blue light can lead to eye strain and blurred vision. YEIN blue light blocking lenses reflect and filter the blue light emitted in artificial light. Almost clear, high transmittance Unlike typical blue light blocking lens with very distinct yellow or orange tint, YEIN lenses are equipped with a superhydrophobic anti-reflection coating and are one of the clearest blue light blocking lens on the market with only slight tint. Advanced coating technology has higher durability Cutting-edge lens coating technology, the multi-layer coating is combined into a single layer with a thickness of only 10um, which increases the surface hardness of the lens, prevent scratches and abrasion while reflecting harmful light, making it thinner and durable. Bifocal Reading Glasses Invisible Photochromic Bifocal Reading Glasses Photochromic Blue Light Blocking Glasses Blue Light Blocking Glasses Add to Cart Buying Options Add to Cart Add to Cart Customer Reviews 4.0 out of 5 stars 1,863 3.9 out of 5 stars 17 4.0 out of 5 stars 290 5.0 out of 5 stars 1 Price $19.98$19.98 — no data $19.95$19.95 $17.95$17.95 Photochromic ✘ ✓ ✓ ✘ Bifocal ✓ ✓ ✘ ✘ Blue Light Blocking ✓ ✘ ✓ ✓ Anti UV400 Ray ✓ ✓ ✓ ✓ Anti Eyestrain ✓ ✘ ✓ ✓ Anti Glare ✓ ✘ ✓ ✓ Frame Material TR90 TR90 TR90 TR90 Multi Magnification ✓ ✓ ✓ ✓