Hi, a Dutch friend from another brain injury site has done some research into screen flicker and how it affects people. He has found a screen system that works. I have written before about increasing the flicker rate on the screen/monitor and filtering the brighter light. This, it seems is the answer. Here's the article. I have asked him to look into off screen filters too and will keep you updated.
oert-jan.nl/eyes/new-monitor-considerations/?fbclid=IwAR0F1yUyVEdnYCWDr7nYoUp1xIpvqZrkT1lpWCPgKXV3CBO6vWuaUIzy6Dg