Currently Being ModeratedMay 24, 2013 12:55 PM (in response to Exandas)
I'm blue-eyed, and I've often wondered if most of us eyestrain sufferers are also blue-eyed.
Currently Being ModeratedMay 24, 2013 1:14 PM (in response to mvanier)
I am as well, blue and light grey. I have read this is probably part of the issue
Currently Being ModeratedMay 25, 2013 6:36 AM (in response to mvanier)
No blue eyes here as well.
I wondered if it had any connection to neurological minor issues like the restless leg syndrome. While i am fit, i do experience sometimes the need to tap my feet or sometimes in bed i feel uneasy and want to stand up. It maybe just my idea but i think my symptoms with the led displays are much much worse when i am somehow stressed and want to tap my feet.
Currently Being ModeratedMay 25, 2013 11:34 AM (in response to Exandas)
Not sure about that one but I do get restless legs sometimes as well, I think it may have something to do with eating too much sugar for me though.
Currently Being ModeratedMay 27, 2013 12:30 PM (in response to RMartin111)
I'm an IT professional here in London UK and a long term lurker of this thread. My eye strain problem has extended to the point where I don't know when a screen is actually of a problematic type and when it's purely psychological - both result in eye strain, so I really don't do myself any favours at times!
I knew my problem was getting bad when I walked through a shopping centre the other day and had to avert my eyes from the electronics section in case I caught a glance of a computer screen and gave myself a migraine...the irony of being an IT worker isn't lost on me here.
I don't have anything to contribute or help at this stage (though if I can I'm more than willing to!), the only thing that's worked for me is using older CCFL screens and my phone is an aging BlackBerry 8520, but I've subscribed to this thread and will follow any related discussions or resources with great interest. The day I'm able to replace my laptop and phone and buy myself a tablet, and have no issues from the screen on any of these, is shaping up to be one of the most memorable days of my life!
Currently Being ModeratedMay 27, 2013 1:10 PM (in response to JamieJLF)
Just to give a tone of optimism, there are manufacturers that are considering the problem. I believe Apple will do the same in the near future. Look at EIZO or Benq, they are already advertising products that they claim are flicker free. Why would they build such products if they didnt believe there is a sufficient market size to buy them?
Have you tried such a display? Maybe these will work for you if you can work with a desktop monitor.
Personally i move a lot due to my profession, so a desktop is not really useful.
Currently Being ModeratedMay 27, 2013 3:26 PM (in response to Exandas)
This is good news that manufacturers are responding. The problem is greater than we think. Search spectrum alliance lights and hurry before this is removed.
Two days ago I accompanined my husband to a Microsoft store. I became quite dizzy from the computer screens and the display panels on the wall. It was torture. I had to leave the store and go outside to sit in the care for a few with my eyes closed. Yes, indeed, the day I can buy a new computer and get a smartphone will be a great day. Catherine Hesset never lived to see that day, but let's never give up, never surrender.
Currently Being ModeratedMay 27, 2013 5:01 PM (in response to Exandas)
I really doubt that monitors advertised as being "flicker free" are flicker-free in the sense that readers of this thread care about. The so-called flicker-free monitors usually have an LCD (not LED) refresh rate which is 120 Hz instead of 60 Hz. This might be important if you are a hard-core video gamer, but it hasn't got anything to do with eyestrain and is completely unrelated to the problem of LED backlit screens. The LCD refresh rate isn't what causes eyestrain. From what people have been saying here for a long time, it's mainly the crappy light spectrum emitted from LED backlights (way too much blue light) as well as some PWM-like flickering effects _on the backlight_ (and not on the LCDs that the light from the backlight passes through). So don't get your hopes up yet. There are new technologies coming down the pipe that may improve the eyestrain situation (e.g. quantum dot displays) but they are a long way from getting into laptop screens. I will say that my iPhone 4S has an LED-backlit screen and definitely doesn't flicker, so maybe there is hope for Apple laptop/desktop monitors.
Currently Being ModeratedMay 28, 2013 12:33 AM (in response to mvanier)
I thought that if the display uses analog dimming (or hybrid) instead of pwm, then the screen should be ok for sensitive to flicker people. Actually i have seen posts that people say that they could work without eye strain with eg Eizo EV2436 while they could not with pwm monitors. So for some people it may worth to try such monitors. What i have not seen is such displays for laptops, tablets, or smartphones, I guess because analog dimming consumes more energy.
Currently Being ModeratedMay 28, 2013 1:14 AM (in response to Exandas)
Here is comparision between analog and PWM dimming effects. http://www.em.avnet.com/en-us/design/designzones/leds/Documents/Aimtec-PWM-vs-An alog-Dimming-of-LEDs.pdf
Looking at: "LED current behavior vs dimming option" chart I don't think analog consumes much more energy then 10-20%.
Currently Being ModeratedMay 28, 2013 1:57 AM (in response to Kxtr73)
Ok then, then i hope we see analog dimming to laptops as well. Maybe this will solve the flicker issue.
Currently Being ModeratedMay 28, 2013 2:27 AM (in response to mvanier)
Green - Hazel, although all my family have blue eyes.
Currently Being ModeratedMay 28, 2013 2:57 AM (in response to Exandas)