martin Hey Martin,
what type of heterophoria do you get? I have a "small" esophoria and after i tried W10 2004 for a weekend without success, now i am constantly "disoriented" in front of any display and two weeks are passed. Next week i will go to my optometrist and i'll see if something happens to my esophoria (maybe now is worst then before?!) and i think to start with visual training and/or prisms!

      Lauda89 Hello, I have esophoria. Treated for 2 years now. Definately get a proper evaluation and start therapy, it can help a huge amount. At least until tech companies change something.

        Jason thanks for the reply and help! You said it took you 11 years to figure it out. So what type of screens can you look at?

          martin thanks for the reply! I have been to one optometrist and then an ophthalmologist today. The latter was my worst experience with a doctor. However, at both places they did extensive vision tests. I don't have any problems with my vision or alignment with my eyes. The ophthalmologist today said I should see a neuro-ophthalmologist.

            Jason One difference I have just thought about is that my phone has a tempered glass screen protector on it. I have read that some other people have seen results by using certain screen protectors with matte anti glare filters.

                Tommy98 I believe at this point depending on what I'm doing I have used and do use every screen type except I have no experience with mini LED and full array local dimming LED screens. I use a VA panel at work I have an IPS tablet at work and I have 2 TN panels at home, 2013 Plasma TV's and a 2002 JVC CRT. I also have a Yotaphone 2 which has an OLED screen on it. My biggest issue is what I'm doing on the screen ends up being the biggest cause of eye strain. I don't like to watch movies/shows unless it's on my Plasma TV. When I game I always use the correct screen for the job and that is usually determined by what game I'm playing and what Console It is. It would be in your best interest to become familiar with all the screen types and what kind of content you are doing on them. Are you only reading text? Are you only playing games? Are you only watching movies. Linus Tech Tips has done good videos on all the different screen types. https://www.youtube.com/watch?v=zNc2fKuVnGU At least in my case if you can narrow down your causes of pain you should be able to do 16 hours of screen time a day if you want. Everyone's eyes see and process screens differently and just cause a CRT/Plasma or LED using BFI is most comfortable to me doesn't mean it will work for you. If you are watching movies it is a big deal to make sure you know what the content you are watching vs what your refresh rate is. https://forums.blurbusters.com/viewtopic.php?t=3111&start=10

                Games are the same and it pays to know what FPS your game is running at and if it's locked. Every single game will be different. If I pop in Gex for the 3DO that game is terribly programmed. It's capped at 30FPS but it's not stable and the FPS jumps all over the place. It causes tons of strain pretty fast. Same thing with Tony Hawks Pro Skater 2 for the PS. The FPS is not stable and there is tons of studder. When I play the Dreamcast version of THPS 2 though no eye strain because it's locked at 60FPS. My biggest triggers are motion blur, PWM flicker and very bright screens. You might get lucky and maybe you just need a certain screen type and all your problems are solved. All of us are different on here. Another strange one for me is I can't tolerate any LED light bulb. I still to this day have not figured that one out. I even tried one of the better more expensive LED's that has less blue light in it then Incandescent and is flicker free but still gives me eye issues. That's why I own over a 1000 Incandescent bulbs for the rest of my life just in case. Good luck!

                  Thanks for the reply and advice! That's a lot of light bulbs! As of right now am trying to narrow down why I can use my phone and not other screens. I know that something in my brain changed or deteriorated because my pain just occurred randomly one day without any changes to my monitor or anything like that. When it started I had been using the same setup for like 4 or 5 months with no issues.
                  Thanks for your help!

                    Tommy98 what is your age may I ask? Its not uncommon for heterophoria to set in after a virus infection for example, or simply with age. Also most optometrists are bad and wont find anything, or know of the now obvious connection between heterophoria and new tech. I pesonally help about 5 people that Ive met and sent to my specialist with significant finds when checked properly.

                        martin I am 22. I don't know about heterophoria. However, I do know that my right eye is slightly weaker than my left, and it hurts more than my left. Yet, I am still 20/20.

                          martin I do see the possibility of having heterophoria set in though. At first I thought it was an eye infection, and I remember there being just a small amount of extra discharge in the corners of my eyes in the morning for the first few days or so.

                              martin I'm looking up heterophoria. Do you mean where each eye is looking a different direction? If so, is there heterophoria where it isn't noticeable by just looking at someone's eyes?

                                dev