I know we've had previous discussions on blue light, pros and cons.
Thus article and the referenced study might be of interest.
https://mobilesyrup.com/2019/12/17/p...an-blue-light/
Quote:
Your phone’s blue light filter may be worse for you than blue light
Research suggests your eyes respond to yellow light more than blue light
It turns out that smartphone features like Night Light and Night Shift — which tint the screen to reduce blue light and help users fall asleep — don’t actually help users fall asleep. In fact, tinting your screen may actually be worse.
According to a study conducted by the University of Manchester (https://www.manchester.ac.uk/discove...get-the-blues/) , using Night Light on Android or Night Shift on iOS to make your display more ‘yellow’ is worse than leaving it in the regular untinted ‘blue’ mode.
Initially, the reasoning behind changing the colour of your phone screen was based on some rather sound principles. The human eye contains a protein called melanopsin, which reacts to the intensity of light. In other words, your eye reacts to light with a shorter wavelength — perceived as blue — and theoretically stimulates your brain to let it know it’s daylight and not time to sleep. Thus, the night mode options on smartphones adjust the colour of the screen to reduce blue light and prevent your eyes from telling your brain it’s still day.
Read more at*MobileSyrup.com:*Your phone’s blue light filter may be worse for you than blue light
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