I don't know that, although I once tried hard to google it. What I do know, though, is that for me these orange-tinted blue-light-blocking safety glasses (which

I don't know that, although I once tried hard to google it. What I do know, though, is that for me these orange-tinted blue-light-blocking safety glasses (which I learned about from somebody else on this very forum discussing this exact topic a few years ago) work way better than any screen-modifying software I have tried. https://www.amazon.com/gp/product/B000USRG90/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 https://www.amazon.com/gp/product/B000USRG90/ref=oh_aui_sear... They look a bit silly but if you are just at home, who cares... (I no longer use them, because in the intervening years I produced three young children, so I am now exhausted at all times and can fall asleep instantly whenever the opportunity presents itself. However, I still do use Night Shift / Night Mode / f.lux / Windows Blue Light Filter on all my phones and computers, because I came to strongly prefer it after getting used to it, even in absence of sleep issues.)