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?

            Please remember the topic of the thread. -> Discussions about the XS in the XS thread

            • AGI likes this.
            7 days later

            martin Got a magnesium prescription as a nutrition supplement

            Do you still take magnesium supplements? Do you think they've helped in your vision therapy treatment?

              ryans Not really, just easing the pain by working as a muscle relaxant. Not anymore, doing more therapy now. Made a breakthrough and now trying to push it further to get to a level of no pain.

              16 days later

              Harrison Hm, I too have jaw problems. Shifted discuses on both sides. Happened like 4 years before the eye strain problem. I guess this could be described, in a loose way, as a permanent state of mild jaw-clenching. Makes me wonder, since @Gurm reported teeth grinding, too.

                KM

                Just to share my experience so far. I am starting to hesitate that some relaxation exercise will "cure" the eye strain issue for me.

                I am training with Alexander Technique and Feldenkrais for the last 3 years, i may even become a teacher in one if these techniques sometime in the near future, just to demonstrate my level of involvement. It all started as a way to help me with back pain. I am an chartered accountant by profession and long sitting hours had an impact on my back.
                In the above techniques we work a lot with the releasing extra tension in the eyes, in the jaw as well the neck. The techniques had such a profound effect on me that even my issue with chronic blocked sinuses have started to feel a lot better without medication. My neck, jaw and eyes are way more "relaxed" or released than 3 years ago. My sleep quality is very good, no teeth clenching or anything like that.
                Actually I am 40 and in combination with jogging (3 days per week 30 min per session), i am in the best bodily state ever. I do not follow a special diet though, i am just careful not to eat junk.

                However the strain issue, while there is some improvement, is still there. I can actually feel my eyes relaxed and very easy to move but when i sit in front of a newer laptop my eyes become tense and i get an intense headache and neck cramps.

                  dev