Don’t fall for blue light glasses. Eyewear companies sell lenses that block blue light at an upcharge, claiming it causes eyestrain. But experts say research offers no evidence of that.

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The 280 nm ultraviolet light-emitting diode (UV LED) has emerged as a promising water disinfection technology and has been applied from point-of-use devices to municipal-scale systems. Accumulating ...

Peepers reading glasses have earned a spot on Oprah’s Favorite Things list multiple times. The brand’s stylish frames, including blue light-blocking glasses, are available at Amazon from $10 ...