How do blue-light-blocking lenses protect your eyes? The more blue light a lens blocks, the more orange it appears. Some lenses block up to 98% of blue light, but they can turn your entire world reddish-brown like a sepia-toned print.Īll Rocket Eyewear blue-light-blocking glasses use lightly amber-tinted lenses with minimal color distortion that can filter up 50% of blue light from digital screens (420 to 450 nm). Unlike reflective lenses, which can only block around 10% of blue light, most blue-light-absorbing lenses (the ones that look yellow or amber) filter at least 35% of blue light. Lenses with a blue-light-reflecting coating can appear bluish, whereas blue-light-absorbing lenses feature a yellow or amber embedded tint. The visible light spectrum encompasses light with wavelengths from about 400 nm to about 750 nm, whereas blue light ranges from 400 nm to 450 nm, which is the shorter wavelength, higher frequency (energy) portion that digital screens emit.īlue-light-blocking glasses, also known as screen glasses or computer glasses, filter high-energy visible (HEV) light, the high-frequency segment of the visible light spectrum with wavelengths between 400 nm (nanometers) to 450 nm, preventing it from reaching your eyes.īlue-light-blocking filter technology works by either reflecting or absorbing blue light. Blue light refers to the high-energy visible (HEV) segment of the visible light spectrum.
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