I’ve found the best solution to eye strain is just turning down my screen brightness. It’s solved all my problems, and I can stare at a screen as long as I need to now
I test by looking around randomly a bit, keeping my screen in my peripheral vision. If it “pops” brightly in my peripheral vision, I know it’s too bright.
Or I adjust the other way; if I’m planning use a screen for a while in a dark room, I’ll turn on some lights to bring up the ambient level a bit.
I personally can't last 1 minute on a white screen, and bringing brightness too low isn't without its issues.