Blue Light Blocking Retro Sunglasses with 1-color arm imprint. Our best-selling frames feature a square shape and recognizable cat eyes. These iconic shades are fitted with blue light lenses to assist with blocking potentially harmful blue HEV light from screens. They help prevent headaches, blurry vision and other symptoms of digital eye strain. Ideal for use when using a laptop/desktop, watching TV, playing video games or looking at your phone screen.