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The efficacy of blue-blocking lenses in blocking blue light is not disputed, but whether typical exposure to blue light is hazardous enough to require blue blocking lenses is highly disputed. [38] One problem with the glasses is that they cannot achieve positive outcomes in blue-light hazard and sleep simultaneously.
Digging deeper, there are a handful of different types of blue light glasses out there (sometimes called blue light blockers). "The most popular typically filter 20 to 40% of blue-violet light ...
The lenses of the glasses have filters that sellers claim can block or absorb the blue light, so less of it reaches the eyes. Unlike regular glasses worn all day long, they are only meant to be ...
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 ...
Blue-light-blocking glasses claim to reduce eye strain from devices, but scientists say there are better ways to reduce the strain on eyes.
Some manufacturers already design glasses to block blue light; the insurance company Suva, which covers most Swiss employees, asked eye experts around Charlotte Remé (ETH Zürich) to develop norms for blue blocking, leading to a recommended minimum of 95% of the blue light. [31]