But anyway do not forget to check your room lighting because many electronic bulbs have lots of blue in their light spectrum, compared to traditional light bulbs which have almost none. Ultimate solution for reducing any blue is getting an e-ink monitor, which, well, emits NO light at all. This is a marketing simplification and some actual measurements should be made for these displays, but obviously some work was done here.Purchase display with advanced reduction of blue (like BenQ EW2755ZH or EW2775ZH or other brands and models introduced since writing the answer) which solves blue light reduction on hardware/software basis by reducing part of emitted blue spectrum (see the gap in bottom diagram): (Update: there are also blue-light filtering lens available on the market, which are not yellow.) Purchase glasses with yellow lens (or clip-on yellow lens if you are already wearing glasses). Plus a monitor without PWM brightness control.)īut also you can take more advanced steps to reduce blue: (From my long experience, avoiding white backgrounds during the night work has the most significant effect of all protections. (You can find amber and green filter in discussion on download page.) Now the similar functionality is available in Windows 10 (release 1803 and higher), in Settings > Ease of Access > Color Filters and then toggled by Ctrl + Win + C. If you want to reduce ALL unnecessary colors a bit more in the evening (what about turning everything red, amber or green?), grab NegativeScreen. If this basic blue light reduction makes you happy, then fine. However, there still remains blue light coming from display backlight as part of its white light so you will measure blue not only in all non-blue colors, but even in black. They are definitely reducing blue by converting it into color shades containing less blue. Software tools like Redshift or f.lux adjust display color profiles towards red shades, so they take you some way in reducing blue.
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