Introducing our {SETO 1.67 Semi-Finished Blue Block Single Vision Lens}, exclusively crafted at our top-notch factory! These lenses are designed to provide optimal clarity and protection against harmful blue light, reducing eye strain and fatigue. With a refractive index of 1.67, they offer thinner and lighter lens options for enhanced visual comfort. Perfect for everyday use, these blue block lenses provide superior protection without compromising on style or functionality. Step into the world of premium eyewear with our factory-crafted {SETO 1.67 Semi-Finished Blue Block Single Vision Lens}!