martin deepflame I can ask but they are really busy now, its hard for me to even get them to reply to me. But you can write in english here - https://www.vysetreni-zraku.cz/ and they should be able to reply and recommend some place that they trust. If it was a quick check Id go elsewehere. Check the article.

Thanks Martin, but I think I have "solved" the main problem already. I got new glasses now with blue light filter and less grades that makes focusing close-up easier (I am near-sighted). In addition I got an old laptop that does not dither at all under Windows 7. So I am pretty happy currently and would not need anything in that direction anymore. But thanks a lot for answering!

    a month later

    Hey guys,

    I wanted to come up with a summary of my health topics so far. However I've to say that it is ridiculous.

    So this are my main health problems:

    • eyestrain (of course)
    • bruxismn - grinding my teeth
    • sleeping problems - sometimes I am fully awake after 2hours of sleep - maybe due to the bruxismn
    • ENT Problems, especially breathing truth the right nostril and pain in the right frontal sinus
    • sometimes a high amount of "stress" in the body, especially on heavy bruxismn and bad sleep nights
    • a permanent activated immune system (doctors told me that) - the body is fighting against something

    These problems weren't here at once, they all appeared with a distance of some years, however they seem to be highly connected. Also I know that many of you suffer from the same things as me and as a result I think that we shouldn't see the eyestrain issue as an isolated discomfort.

    So with some extended bloodtest some special doctors told me that my immune system is permanentely working and that the body is fighting against something. However (and thats ridicolous) nobody could tell me so far against what my body is fighting. As a result I am a special case under the special cases who visit this mentionend doctors.

    2 years ago I had two surgeries and they removed my tonsils and corrected my nasal septum. I had a dental brace for 3 years and now I'm doing a special orthodontia therapy in order to correct the bruxism. Also I'm doing my eye excercices (convergence) for 4 months now.

    Only these eye excercices helped a little bit, but not as much as I hoped.

    It is not a hashimoto or any other auto immune disease. A doctor meant that I'm not far away from the chronic fatigue syndrome caused by the Epstein–Barr virus, however this diagnose is some kind of inconsistend between two different tests. Another theory is that there is a foreign material in my body which causes this problems. So maybe I'll doing a Lymphocyte transformation test which can tell me if the composit materials of my dental fillings are problematic.

    This theory came up because the bruxismn started 2 months after I got my first composit dental fillings and the eyestrain occured the first time three-fourths a year after that (I purchased a new notebook). Before that time I never had a bruxismn or such heavy eye problems at all. However it's only a idea and maybe there is another root cause of this.

    So I am pretty sure about that there is a health root cause of the eyestrain which makes us more sensitive to all of the different display and graphcis technologies.
    Some of us have more or less additionally health issues, but there is a big connection.

    • jen replied to this.

      I agree, I would expect it to be along the lines of immune system aggravation leading to brain or optic nerve inflammation. An example of this, giardia, an intestinal parasite, can trigger immune system mediated retinal inflammation.

        Seagull Weird, I was under the same line of thinking when it came to speculating that maybe a parasite could cause some of these symptoms (e.g. bruxism, anxiety, etc). I'm not sure where I'm remembering that potential link from. Take that for what it's worth perhaps?

            MagnuM

            You are correct, some parasitic infections are associated with anxiety.

                5 days later

                Seagull
                MagnuM

                Good point with the parasite.

                Anyone else is noticing that my mentionend symptoms occur in phases? There are "good"/bad phases and very bad phases where eyestrain is worse and sleep quality is also bad.

                Yesterday was such a bad sleeping night. If I did not know better, I would say that demons are obsessing me at such nights ;-)

                      martin
                      "Therefore my conlcusion so far is that I really do lack MPOD (macular pigment optical density) in my retina, and my retinas cannot filter out blue light." You should measure to have sure. So you can have sure, or else you could be mesguided. We have to be careful making conclusions, based on simple results. There are multiple variables.

                      I am thinking more and more, that the majority of problems are flickering related. But different kinds of flickering. Some dithering, color flickering, contrast flickering, etc. Some people are troubled by flickering on blue spectrum. So it's the photoreceptors either blue cones or RGPC's ganglion cells that are the sensitive. Maybe people have differente photo-receptors sensitivities. So for some people the blue light problems only occurs with flickering.

                      1- People only affected by flicklering.
                      2- People affected by flickering when blue spectrum is high. (different photo-receptors affected the number 1 group).

                      Do you have any LED display that dont cause you problems? Maybe on LED that dont have any substantial flicker of any sort?

                        MagnuM i dont know about oled tv's, but oled's smartphone, dont really have lower spikes of blue spectrum. They might slighty 10nm right sifhted.
                        What they have usually is more intense green and red intensities spikes. So more balanced.

                        Also maybe OLED's have less flickering. I think that backlights have lots of flickering. Maybe inversion or other related stuff. Maybe
                        OlED dont have that problem.

                        Have you tried IPhone XS or Galaxy S9?

                            I don't know if it that harsh. Depends on people. Its sinusoidal waveform which is much softer then digital waveform.

                            I noticed with my peripheral vision, and it's annoying but I don't feel pain. At least immediately. Never tried watching to OLED for long times.

                            Harrison Ironically enough, I seem to have less problems on less sleep. Maybe my brain is literally working slower and my reflexes to flicker are not as fast! XD

                            • JTL replied to this.

                                MagnuM If I sleep in too long I find I don't do as well and I'm more tired. Inverse sleep.

                                  tfouto XS appears tolerable to me and I would like to know why, since I could not stand 8 and X...is there a plausible technical reason?

                                      tfouto Nope, mate. It costs 60% of my second-hand car :-)
                                      If it rains it does not shield me...
                                      I just accidentally passed by one of those huge electronics shop and thought of taking a look. My eyes were already in pretty bad conditions so I cannot guarantee, but I was surprised I could handle it fairly well. I read pages for 20 minutes and I expected to be in pain afterwards but nothing...
                                      I tried another day and same feeling.
                                      I would buy it - because I know that would be the final proof - if it only costed as a phone is supposed to cost...

                                      But thanks for your insight. Too much blue is not inspiring although I am quite convinced it is not the main source of discomfort to me. By the way, are screen protector supposed to cut blue light off besides preventing scratches? I was surprised by the intense blue light peak from my phone with screen protector on...I do not recall what is made of...I have not been able to find a transmittance curve for tempered glass...
                                      @martin I assume your Iphone producing UV was not screen-protected, was it? Because even simple polycarbonate should cut that off...

                                          degen Trying this eyedrop again. Cuts the glare while driving at night for sure. Pupil is way smaller (but only under low light conditions).

                                            tfouto I do not recall. I think some cheap tempered glass...

                                            Thanks on the True Tone. I will check if it has an effect. I wish I could rent an XS for a week at a decent price and check it out seriously. Is True Tone the only difference to the X that you know of? What about the flickering? I heard it was terrible for the X...is it at least nominally better now?

                                                dev