Eli5: Why are blue light signs so grating to the eyes in comparison to red light signs? When I’m on the road red signs feel more easy on the eyes for some reason?
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Blue light is hard on the eyes. It’s something that’s only recently been studied since in the past blue light was hard to come by. Now we have blue light all over the place, most commonly in computer, TV, and phone screens. It’s basically the reason we experience “screen fatigue” when we stare at bright screens all day.
Many devices now have a “blue light filter” or an “eye comfort” mode to help. You can also buy a pair of blue light filtering glasses (~$20 on Amazon) that I’ve personally found to work wonders.
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