CheesyBiscuit Hi, if I can advice you..stop looking for any new monitor. My experience is that there is no new suitable one...at least for me, because of its LED backlight (panel technology - I mean TN, IPS or whatever - does not matter). Just try to get an old one with CCFL backlight. It was the only thing which helped me... so I bought several as a reserve 
Struggling to find a new monitor that doesn't cause pain
@K-Moss the screen quality was really bad, screen door effect, you could see the pixels really bad in the sides of the screen and the motion blur was way too high, even with all the settings, was causing me dizziness. I believe a glossy surface would annoy me even more.
@Seagull I only tried new screens...I tried 2 models which were launched in 2018 if I'm not mistaken and that didn't helped....
I am now without a monitor and I'm using my Dell Latitude 5401 and for an hour or so I thought this is better for me eyes but I can notice that this also gives me eyestrain...not as much as a bigger screen I guess, but it's there. Especially when watching videos when youtube. I'm desperate...
Found some information on my Toshiba Satellite. It explains what a TruBrite monitor is and possibly why it causes me the least strain.
https://forums.tomshardware.com/threads/how-does-toshiba-trubrite-work.2657672/
It'd be great if I knew who manufactured Toshiba's TruBrite monitors and if they made desktop models.
6 days later
CheesyBiscuit Try to contact Toshiba and lets see if you get an answer.
An update: I've been using the Acer V227Q bip for a few weeks now. It still causes me strain. I've adjusted the the blue light levels to 70% (which is helping a little), kept the brightness 40% and contrast 50%. I'm using dark mode for everything but reading text and viewing bright scenes in videos is still bothersome.
From some research I've been doing, 24 inches seems to be the 1080p standard. Considering I'm using a 21.5 inch monitor, I'm wondering if the text is being crushed from the slightly smaller size. I could lower the resolution to 1600x900, but I don't want to lost image quality.
I'm wondering if I buy a 23.8 inch monitor, it'll clear the text up a little bit.
BlasterFX Try to contact Toshiba and lets see if you get an answer.
I'll have to try that. If they can't give me an answer, I could always buy a broken Toshiba Satellite and dissect the monitor. The panel manufacturer is usually printed on the inner hardware.
8 days later
I've tried 23,6, 23,8 and 24 inch monitors, all on FHD resolution and noticed that even though the pixel size is the same on each monitor with the same size (0.2745 for the 23,8 ones), not every monitor shows the text the same. You can get a 23,8 FHD that has pixelated text or you can get one that has crystal clear text. It's a f**** mess picking a monitor.
I believe you can fix this by getting a higher resolution screen and increase the text size in Windows. I'm now using a Dell Latitude laptop that has a 14 inch display FHD resolution and text size set on 120% and the text is as crisp as you can get but for some reason this gives me some eye strain even though it's a WVA panel.
CheesyBiscuit 40% brightness is much too high for one sensitive to LED screens. Most of use brightness levels under 10.
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I gave up on white LED backlight monitors. They all force me to turn the brightness extremely down so I could only use them in a dark room, and then still my eyes don't feel truly relaxed. I'm currently using my 43" Sony 4K TV (XG8096) from last year as monitor replacement whenever I need a PC. Somehow its display is different from others, meaning I have no brightness issues anymore. Probably due to the Quantum Dots they use. It's not that bad having such a big display as the 4K pixel density is equal to having 4 21.5" displays at 1080p each. I wonder if all current Sony TVs of all sizes have this backlight, too. Could be a solution if nothing else helps.
K-Moss CheesyBiscuit 40% brightness is much too high for one sensitive to LED screens. Most of use brightness levels under 10.
Eh? I would suggest many of us set the brightness high on the monitor to avoid any PWM issues, and then use the GPU controls to reduce the output brightness levels to something that is more comfortable.
8 days later
Dell U2414H, 2407 get the most love on here, followed by Benq EWxxx. I like LG24GL600F via displayport & AMD
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K-Moss At least they have a ripple. That's not PWM but flicker nonetheless. How big it it is and what frequency they use differs between models. To me it looks like even small flicker can cause symptoms.
Changing the backlight brightness can change both amplitude and frequency of the ripple, so experimenting with brightness may be worth it. There may be a sweet spot that's usable. It doesn't have to be 100% in this case.
I doubt flicker free monitors have PWM but you never know - they may just have a higher frequency.
I use the Nvidia control panel to reduce the brightness so it's probably card/brand specific.
8 days later
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Are there any others recommended? Like a globally foolproof option?
I get sick from all I've tried and quickly.
I've tried Dell U2414H, Dell 2407, MSI MAG27CQ, BenQ EW2440L. The EW2440L which I have at the moment gives me very long lasting stuff from very short exposure. It's the first time I've had to switch lighting at home back from flicker free good spectrum LEDs to incandescents. I use an NVIDIA 970 graphics card and Windows 7. At this stage e-ink is my only friend.
3 months later
Quad43 Anyone know why 2717d would be problematic when Dell 24XX are great?
The Dell 24XX monitors have a CCFL backlight, rather than an LED backlight. For many folks this is easier on the eyes. For example, although they have PWM to control brightness at around 60% brightness and lower, the CCFL light source dims slower than an LED (which is abruptly on-off) so makes for a smoother effect on your eyes.
Thanks, maybe I rid of my 2717d then as I get pain only above my left eye(brow). With slow-mo I don't see any PWM or anything. Maybe 24xx is just one I stick to.