Kray Sorry to hear about your situation. If all else fails, you might want to try buying a portable analogue projector, and use that as your main display. Get a small portable white screen (if your office desk is not facing a blank wall), connect the projector via vga on your work pc/laptop, and look at the white screen as your main display. Whatever flickering, dithering and that elusive unknown cause of eye strain will likely stay on the LED display, but you are not looking at the LED display, you are looking at a blank wall or a small white screen that the projector is projecting the desktop from your pc/laptop. Might be worth a try. Unfortunately, people in our situation need to invest (to try out new laptop, parts etc) and do many trial and errors to see what works. Hope this works for you.
I've tried projectors in the past, I still get symptoms.
It seems patching my dominant eye is helpful across more than just the eInk monitor. I saw my eye doctor and he tested me extensively and recommended I get some glasses made with a mild amount of proscription change in them and a 2 diopter prism (1 in each eye). I dropped those off to get made today and should have them in a week or so.
I also may go see a nuerolens place just so they can use thier testing machine on me and try to remove my subjective interpretation of what different things are doing while I am testing lenses and changes in strength and prism.