Why Need Bifocal Lenses Readers? -These lenses accommodate for both near and far vision by adding a unique lower lens with ADD vision value for reading and near vision. -Looking through a pair of bifocal lenses with a special lens insert at the bottom of each lens will allow you to read or see what is written on a computer screen without taking off your old glasses. SEE THE WORLD WITH BIGGER AND CLEARER VISION Lens Type: Bifocal reading glasses have unmagnified lenses which also contain inserts with the magnification of your choice in the lower portion of the lenses. This type of lens works best for those who are constantly switching from looking down at reading and writing materials to up and off at a distances. Attention: All references to "bifocals" herein refer to readers having unmagnified lenses containing a "bifocal style" single powered reading glass insert located on the lower portion of the lenses. Product highlight Relieve digital eyestrain with blue light blocking lens Prolonged exposure to high-energy visible (HEV) blue light can lead to eye strain and blurred vision. LifeArt blue blocker lenses reflect and filter the blue light emitted in artificial light. Greater durability with advanced coating technology 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. Virtually clear with high light transmittance Unlike typical blue blocker lenses which have a very noticeable yellow or orange tint, LifeArt lenses comes with a hydrophobic anti-reflective coating, the clear blue-light-blocking lenses with only a slight tint. Dry Anti-Fog Cloth Popular Style Photochromic Sunglasses Designed for Children Value Four-Piece Set Diamond Trimming Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 3.7 out of 5 stars 16,170 4.3 out of 5 stars 16,858 3.8 out of 5 stars 1,381 4.3 out of 5 stars 153 4.4 out of 5 stars 14,215 4.4 out of 5 stars 694 Price $3.95$3.95 $14.95$14.95 $26.95$26.95 $9.99$9.99 $15.95$15.95 $24.95$24.95 Anti-fog ✓ no data no data no data no data no data Blue Light Blocking no data ✓ no data ✓ ✓ ✓ Anti Eyestrain no data ✓ ✓ ✓ ✓ ✓ Anti Sunlight no data ✓ ✓ ✓ ✓ ✓ Frame Material no data TR90 TR90 TR90 TR90 Titanium Lens Material no data Resin Resin Resin Resin Resin Multi Magnification no data ✓ ✓ ✓ ✓ ✓ Weight 7.5g 10.5g 11.0g 9.5g 16.44g 14.5g