I want to share here how my progress went since last time:
I have finished the basic course of the therapy. I have reached very good results in ability to compensate my heterophoria. However my type is the most difficult one (ezophoria) and often therapy is not even advised, unless the person is willing to do a lot of work. I need to wear glasses, as I have one shortsighted eye and without them, the heterophoria starts to naturally take place as my system will prefer the sharper eye.
I will now do the therapy only 3 times a week instead of every day, and see if the added rest will not aid in further progress. It is still to be seen, whether that will have to be for the rest of my life, as the issue might come back when not actively exercised, or if it can have a permanent lasting change.
I have cured the issue with my digital camera display within first 2 weeks of doing the therapy.
I have increased my ability to tolerate phone displays (iphone 7) from few minutes to hours, with breaks if tension headache starts to appear.
Same applies for computer displays, however there, since their size doesnt always allow for peripheral fixation of my gaze, I still have trouble.
I still have trouble with anti-aliased fonts and have to turn them off whenever possible.
I still have trouble when the display is too bright - possibly due to again, not being able to fixate on anything else of similar brightness in the room.
I hope this is not all that is possible, as I would like to be completely problem free. The therapy showed me that there is a definite connection in the problem I had (tension headaches, migraines, nausea, eye pain) and new display/rendering/lighting technology. The old is still as good one as before.
I have spread the news about this issue to as many people as possible, and some now come to me saying they do have similar issues, although sometimes not as pronounced and not in such a short time after exposure. But they tried old display tech and have seen a difference in ability to tolerate it. I believe, since 80% of people have some degree of heterophoria, that the larger degree of deviation and the more difficult the specific type of heterophoria you have, the more severe are your trouble.
I have also come to understand, why many people do not feel the issue when for example shopping for a laptop in an apple store, but later at home it manifests. Many stores are extremely well lit, meaning your pupils will constrict as much as possible. When that happens, depth of field (area of ability to keep focused image from nearest to you to farthest possible at the same time) is larger. When you have heterophoria and accomodation issue, meaning your eyes cross elsewhere than they focus, larger depth of field allows those two areas to meet in a more probable way (not one point is in focus, but a whole area, so where the eyes cross can overlap with this area). This is also the reason miotic eye drops have been reported to work - they contract the pupils. However your doctor should warn you not to use them regularly, they can only be used for a limited time, as it is technically poison.
Muscle and body relaxants help for the same reason - if your issue is convergence excess (tight muscles that need to be relaxed more than weak muscles that need strenghtening), alcohol and some forms of cannabis (probably CBD) can help you get there while under the infulence.
My specialist told me there is now more interest in publishing, MDs have taken interest as well apart from only optometrists before, and there could be a network created of a worldwide specialists who can treat this issue. The training may also become much more effective in the near future, eliminating the need to do it for months or years.
Whether you believe there is a connection between heterophoria and the new tech or not, you can perform a simple diagnosis. Take a brock string, or make similar yourself (google for options). Anchor the string to something at your eye level or slightly higher. Put the other end to your nose. Focus on the first bead on the string placed approx 40cm from your nose. Notice where do the lines cross when you focus on the bead. If right where you focus, heterophoria is probably not your issue. If behind, you have convergence insufficiency. If closer to you, you have convergence excess, which is the hardest one and you may have the worst of symptoms. Your heterophoria may also be vertical and this test will not cover that, but its a good start. If you struggle seeing both lines and only see it on left or right, or they come and go, it means reception from one of your eyes is shut down in the brain.
I would welcome a technical solution, but after all these years, this is the only thing that gave me any progress. And maybe realizing how this issue works within our bodies, a way to a technical solution could become more clear. Realizing what the tech does in relation to us is first step to figuring out what it shouldnt be doing.