Recent content by informerkh

I clearly see I've come to a wrong place with the question. The majority have no actual experience with tech (or complicated optics) to make any advices, aside from very basic advices about how to organize data collection. The blind test was proposed solely to prove to the contributors of this...

Hello Tom, happy holidays to you and have a great 2022! I've seen a plethora of videos, including the first one, but the second one is new to me, it is way more detailed and interesting to watch. I found exact same 3M presentation that is featured in this video and yes, I told that removing...

Hello, thank you for suggestions and happy holidays! I doubt that this particular problem has any connection to this. For me, typical CRT frequencies of 75-85 Hz were difficult for perception, I saw how image 'pulses'. But my symptoms were completely different, my eyes were red and the head...

Just wanted to clarify if maybe something was misleading. I do not represent any organized group of people, and due to the different background, skills and countries it is hard to do anything organized. I've seen a number of similar stories and Mrak0020 spoke to different people with the same...

Hi Tom, Those two ideas are also interesting! I personally haven't tried polarizers independently yet, but I may try and see what happens. I asked the lady I mentioned (she uses nickname Mrak0020 on the forums I mentioned) and she also haven't tried. But both me and her tried different...

Yes, that is a great idea and I want to do something similar! There are three problems with the execution: 1. People are scattered around the world and even within one country. As I need people who are willing to participate, have free time, have these layers... It is super hard to organize...

You posted an article about a Vcom voltage. I posted just now! that I tested Vcom by adjusting it to make its flickering totally visible. Monitors (not all) have a resistor that can be twisted and made better / worse up to a pronounced flickering of neighboring subpixels that can be seen easily...

Flicker is not part of the problem, I can easily test it and easily avoid it, it is a simple thing to check. Right, that is exactly the case, I can experience the pain with static illumination. And that table lamp without LCD layers above it is completely fine for me, just like any ordinary...

Excuse me but I literally just described some tests for flicker sensitivity in detail. Problem is not related to flicker. Why do you suppose that it is? I am not sensitive to any flickers other than the common low PWM rate that can easily be avoided and is not present in most LCD screens. Many...

I just found this really cool article https://spectrum.ieee.org/visioncorrecting-display-means-no-need-for-reading-glasses. It describes methods of adjusting screen image for people who wear glasses so that they can see this image clearly without prescription glasses. I am now thinking again...

There is a very simple explanation. There are two things participating in vision: eyes and brain. 120Hz is typically invisible to the brain. Person can't see it. But it is detected by eyes. Eyes can detect this flicker nonetheless. A very simple pen (or pencil) test proves this. If you take a...

Wow! Thank you so much! That would be great! I sincerely hope that will help to figure things out! (At least to define set of non-flicker probable causes) Yes, they are the prism sheet (it might be not a direct cause of pain in the monitor but it definitely unexplainably hurts when it is...

Ok, let me get this straight. Does anyone here have any experience with these layers or knows how they may work? I do realize that everyone are trying hard to help here and I am grateful, but maybe more experience with this particular tech is needed to help with this optical issue.

Sure, and this doc exists in Russian. This is how we ruled out all the flicker influence (FRC, Vcom, inversion, PWM, refresh rate, software etc. etc.). Again, I am now more interested in how exactly two non-flickering, very static pieces of material can be so problematic for the eyes.

On the contrary, it shows that I am flicker sensitive only up to these frequencies, and none of my LCD screens have these flicker frequencies. These frequencies are typical not to LCD but to OLED screens (typical PWM frequencies) and many if not the most people are sensitive to these frequencies...