- Unisex Rectangle Reading Glasses in Black by Foster Grant - Kramer e.
Foster Grant® e. The latest in reading glasses feature a patented lens coating technology that helps reduce up to 34% of potentially harmful blue light transmission in the 415-455 nanometer range* and fights the temporary effects of digital eye strain from devices such as computers, laptops, and smartphones.75 Unisex Rectangle Reading Glasses in Black by Foster Grant - Kramer e. Readers™ also help reduce screen glare, improve contrast, and are scratch-resistant.