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Do blue-light blocking glasses help prevent eye strain? A new review finds that the popular lenses don't help with eye strain, alertness or sleep.
However, they could harm your wallet — blue light-blocking glasses or lens filters can cost up to $100 or more. “Don’t beat yourself up if you want to get the glasses, but they should not be ...
Makers of blue-light-blocking glasses proclaim they can help reduce eye strain when looking at smartphones and computer screens for long periods of time. But an Australian-based study said these ...
Blue light, a type of high-energy light, is part of the visible light spectrum. High-energy visible light (HEV light) is short-wave light in the violet/blue band from 400 to 450 nm in the visible spectrum, which has a number of purported negative biological effects, namely on circadian rhythm and retinal health (blue-light hazard), which can lead to age-related macular degeneration.
Studies have been conducted on blue light filtering eyeglasses, [5] [27] which uses special blue light blocking lenses for eye protection against blue light. [ 27 ] [ 28 ] All visible light wavelengths can be transmitted through the spectacle lens, [ 28 ] but some portions of the blue-violet light spectrum are selectively attenuated by coating ...
A study sponsored by the lens industry has shown blue light-filtering lenses decrease specific aspects of light emissions. Theoretical reductions in phototoxicity were 10.6% to 23.6%. [12] Additionally, melatonin suppression was reduced by 5.8% to 15.0% and scotopic sensitivity by 2.4% to 9.6%. Over 70% of the participants in this testing were ...
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