I've read so often on this forum that people have serious problems with MacBooks of all generations. But for me the MacBooks are the only displays which guarantee ZERO eyestrain. In fact, every Apple display I have used so far (iPad, iMac, MacBook) are perfect for my eyes. I can even read books on my iPad with a black background and white text, and it's like reading on paper.
The only unique factors in all these Apple displays are:
1) They are IPS
2) Very high pixel density (220+ ppi)
3) No matte finish
4) Zero PWM
I also have zero problems with Nintendo Switch display and an IPS Bravia TV.
My main problem right now is with PC monitors causing eyestrain, especially on bright whites. Turns out every monitor I've experimented with so far has been a VA panel, so I'm going to try a 4K IPS panel (with 160+ ppi) next, to see if that fixes my eyestrain. (this is in contradiction to the other experiences I have read on this forum where VA panels are actually better for their eyes)