your health
- Edited
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 ;-)
- Edited
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?
Not 100% but I don't think OLEDs need to use inversion, that's just LCD. OLED phones typically have quite harsh PWM though. See the link below for a fairly comprehensive PWM ranking.
https://www.notebookcheck.net/PWM-Ranking-Notebooks-Smartphones-and-Tablets-with-PWM.163979.0.html
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.
Looking at the spectrum, the XS has higher red and green component. They are almost at the same level than blue component.
http://www.displaymate.com/Spectra_45s_a.jpg
http://www.displaymate.com/Spectra_41a1.jpg
Maybe it's just less dithering, flickering. Maybe a better panel which flicklers less. But only measuring with a microscope.
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...
AGI You can check next time if the True Tone on Iphone XS was enabled. True tone can make the display much warmer...
https://www.pocket-lint.com/tablets/news/apple/137264-what-is-apple-true-tone-display
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 I posted here: https://ledstrain.org/d/21-usable-smartphones/880