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Blue-light filtering glasses probably make no difference to eye strain – study
(www.independent.co.uk)
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this post was submitted on 18 Aug 2023
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Less blue light comes out of a screen at full brightness than the sun produces (and your eye soaks up).
It’s a marketing gimmick. That said, it’s nice to be around warm lights at night than ones at higher kelvin levels.
Of course a 6" screen doesn't produce as much as a ball of nuclear fire
But that ball of fire isn't 12 inches from your face at midnight. And, the majority of blue light filter use is targeting sleep quality. A good portion of this comes down to cumulative exposure time. The best solution is to just not look at screens after a certain hour, but no one wants to do that.
To what extent is the issue of using screens before sleep a question of mental overstimulation as opposed to specific frequencies of light?
Genuine question.
Blue light has a documented effect on our circadian rhythm and melatonin production. It's been studied quite a bit. I'm sure mental overstimulation is a component, but it absolutely is not the whole story.
In Western society, there is a big focus on silver bullet solutions because people don't want to address issues in a holistic way. Thus, you have blue light filters instead of turning the screen off.