I hope this question is not too off-topic, but I was wondering if anyone has had any negative experience with LED backlights used for dashboard displays or instrument panels in cars. For example, the i-MID LCD screen in Honda vehicles has an LED backlight (http://www.honda.ca/accord_sedan/2013/trim-levels) (http://www.youtube.com/watch?v=12P6emcRCRI).
I have done some internet searches to see if PWM is used for these LED backlights in cars, but I have not readily found an answer. I called Honda customer service, but they declined to provide an answer out of concern for their proprietary information.
I have anti-reflective coating in my glass. Not sure if that is exactly the same as anti-glare coating. Maybe I need to buy a new one with anti-glare coating. mvanier mentioned that U2410 has anti-glare feature on it. It makes me wonder why it did not work for me.
I feel like I am never going to be able to sort this out. I really wish I could watch videos on my computer like before without headaches. Now scrolling windows up and down also gives me headaches. Very similar to what I get from motion sickness...
I did not try many LCD screens. I have been using the dell ST2310 monitor at work for over 3 years. I got problems when I face my laptop LED screen at home. Actually, I did not realize it is the LED screen causing the problem until I found this forum about only 5 onths ago. Then I start to try differnt monitors, up till now, I have tried both the Dell U2410 and U2713HM (pmw flicker free?). But none of them worked for me.
I wish I had come to this forum much earlier. My headache actually started around 2009 when I upgraded my laptop to a new one with LED screen. Very bad headaches, I had MRI scan and went to neurologists. Nothing was found. After a while, I started to realize that sitting infront of that new laptop made my headaches worse. I thought it was because of the noise. So I switched to my old laptop and my symptoms suddenly become better. Long story short, I feel so glad that now I know the reason for my headaches. Looking for solutions...
After few months I just lost hope for use any kind of lcd monitors and returned to my old good 19' CRT. I tested CCFL/EEFL/LED monitors with the same result: red and burning right eye after only one day of using it. When CCFL was the most comfortable and the LED was almost eye killer, causing severe pain. My tests of using incandascent backlighting to lcd was not proved to be successful. There was no burning this time but pain after some time. I understand my right eye has some unknown problem and is "not compatibile" with rear backlighted LCD technology. (however 2 doctors said it is everything ok with it....)
CRT is far superior for me and I can watch it non-stop, so bye - bye LCD. I am planning to buy one of the best CRT monitor produced: Sony 24' Widescreen GDM-FW900 (2304 x 1440) in near future and test new 3D full HD EPSON 2030 3xLCD projector for watching films too. (i never have problems in cinema).
BTW. Any small LCD like phone, camera or middle like laptops do not give me any problems. Probably becouse they emit much less light ....
And here is good comparision report CRT vs LCD from year 2000: http://www.sgidepot.co.uk/vw/PDFs/Colorimetric_Characterization.pdf
which shows the big differences in light spectrum, contrast and brightness.
Just been reading through this thread as I have purchased my first Macbook Pro Retina 13inch and am having severe eyestrain, focussing issues, tight head, dizziness, facial twitches, tinnitus and nausea. I have never experienced symptoms on this level before from looking at a computer screen and I have used quite a few in my lifetime. My vision is 20-20.
My symptoms calmed down after the first day, but they are still there and it looks like I will have to return it as I can't handle feeling like this. I do not have any problems with iPhones, iPads with retina, etc etc.
I am quite sad as the machine is great, but my health is more important. I have tried various settings, f.lux, etc, but nothing has improved.
1. New modified WLED LED's: GB-R LED and new filter: QDEF both creates wider light spectrum:
http://pcmonitors.info/articles/the-evolution-of-led-backlights - maybe easier for eyes ?
2. excelent comparision of spectrum of different light sources: http://www.cbc.ca/natureofthings/features/light-spectrum
3. Interesting material about CRT, Plasma, DLP, LCD, OLED techologies: http://cs.haifa.ac.il/hagit/courses/ist/Lectures/IST08_Displaysx4.pdf
I want to share my experience with apple stuff.
So far I never had problems with apple screen or any other screens until I faced with
2011 or 2010 (Can't remember) 11" Macbook Air.
It was so bad. My eyes were hurting after few hours of use. I returned after 2 days.
I just couldn't stare at it anymore.
Then I thought i would never buy a mac.
I have 4s and ipad3 which are totally okay with me. I can look at them 8 hours and i would be okay.
Recently, I bought 2013 macbook air 13" (the cheapest model, no upgrades) with LG display.
So far I am using it 5 hours everyday for few days and I am totally fine.
I am liking the mac experince now..
Try the new macbook air 13" if you can.
I can confirm that the new Air 13" does NOT make my eyes IMMEDIATELY hurt.
I can't confirm anything more than that, because I haven't spent enough time with it. However, unlike the retina displays - or every other Mac for the past 2 years - the one that a user brought me to look at last week was actually tolerable for the 5 minutes that I used it, and did not give me a migraine for the rest of the day like any other Mac would have.
So maybe there's something to these new LG displays?
Regarding LG displays, I used a dual sim LG phone L5 E455 for a few hours and i was actually suprised that it did not bother my eyes. But i made light use, i.e. some phone calls and some email reading. I dont know what would happen if use it heavily as my current phone i.e. a lot of email reading and PIM use.
I have the same problem with my macbook air- eversince I started using it, my ayes were redder than usual and irritating. Now that I don't use the mac anymore, my eyes are much more comfortable and healthy. I tried to return the mac, but they don't take it back- they say 14 days only! This is not something you notice in a week or two though, and I was not aware of the problem before I bought the stupid mac- otherwise I wouldn't have for sure. See this: http://blogs.telegraph.co.uk/news/jakewallissimons/100185960/are-apples-screens- damaging-our-eyes/