Caddis Porgy Backstage Reading Glasses in Glossy BlackCaddis Porgy Backstage Blue Light Reading Glasses in Glossy Black These stunning readers are designed to block blue light with a magnification free frequency lens that reduces eye strain, headaches and fatigue. Like all Caddis lenses, they are also coated to reduce smudging and glare. Features Classic design with a medium fit. Top of frame is engraved with goofy and regular for some extra fun. Lenses are made with proprietary Frq blue light filtering