(BPT) – Mobile digital devices are making life easier. But they make our eyes work harder. Today, 70 percent of the population experiences digital eye strain, a condition affecting and causing blurred vision, headaches and tired eyes. To help prevent these issues, ZEISS has introduced Digital Lens – a fully customizable eyeglass lens for the digital age. Unlike single vision lenses, ZEISS Digital Lens lets your eyes move easily and comfortably between your digital world of smartphones and computers, and distance viewing in the real world, for strain-free vision all day long.