Some blue light glasses have yellow lenses. Dubbed “sleep glasses,” Hartl explained, they absorb blue light while allowing other wavelengths — units by which we measure light — to pass ...

Many blue-light-blocking glasses have an orange or yellow tint that is supposed to absorb the blue light while allowing other light to pass through. Generally, the darker the lenses on a pair of ...

Of the three, only one—the Uvex Skyper safety eyewear (orange tinted), $8—cut out almost all blue light. The Gunnar Intercept gaming glasses (medium yellow), $53, cut blue light by about half ...