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Eye strain from LED backlighting in MacBook Pro

434177 Views 1,985 Replies Latest reply: Apr 19, 2014 11:34 AM by Kxtr73 RSS Branched to a new discussion.
  • wimpytron Level 1 Level 1 (0 points)
    Currently Being Moderated
    Feb 24, 2014 11:52 AM (in response to Gareth Jones6)

    gareth,

     

    i have glasses with every possible coating, uv blocker , blue light blocker and crizal prevencia coating, all to no avail. it sounds logical, as i have no problem with some screens and other screen hurt truly hard. all with the same glasses....

     

    i hope the sony will help you... even if it breaks your finances.... but having comfortable eyesight is priceless

     

    i am typing this on the sony with power on, and no problems so far.... nice

  • Exandas Level 1 Level 1 (0 points)
    Currently Being Moderated
    Feb 24, 2014 12:00 PM (in response to wimpytron)

    So even plugged in, the display is fine for you?

  • wimpytron Level 1 Level 1 (0 points)
    Currently Being Moderated
    Feb 24, 2014 12:23 PM (in response to Exandas)

    exactly... i feel no difference whatsoever. sony vaio pro with intel graphics. it is real fun, i,m surfing already three hours without eyestrain!!!

  • ArtechokiQ Level 1 Level 1 (0 points)
    Currently Being Moderated
    Feb 24, 2014 6:55 PM (in response to Jessiah1)

    LEDBENCHMARK tests most lightbulbs for flicker index.

     

    http://www.ledbenchmark.com/faq/LED-Flicker-Measurement.html

     

    Here is a list of standard light bulbs with typical household screw-in-base:

     

    http://www.ledbenchmark.com/list.php?dimmable=2&fitt=5

     

    Just click on any of them and check for flicker percent/ flicker index row!

     

    You will also notice that they provide a spectrum for each bulb.

  • Exandas Level 1 Level 1 (0 points)
    Currently Being Moderated
    Feb 25, 2014 2:58 AM (in response to luisx)

    When i was reading the exact specs in the Flip models, under the 15A models it writes Intel® HD Graphics 4400 NVIDIA® GeForce® GT 735M  NVIDIA® Optimus™

     

    Under the 13A models it writes Intel® HD Graphics 4400 NVIDIA®.

     

    Maybe there is a difference or the Sony site does describe the card correctly under the 13A model? I don't know.

     

    I was ready to buy the 13A since it has the Triluminus display with Intel 4400 card, but now that you tell me that it hurts the eyes i am puzzled what to do.

  • wimpytron Level 1 Level 1 (0 points)
    Currently Being Moderated
    Feb 25, 2014 4:19 AM (in response to Exandas)

    Exandas,

     

    I think you have to get a device with only the intel graphics in it. Some 13 and 15 flip models have 2 different VGA cards on board. on the sony site you can specify the model with only intel graphics. and as it is an online buy, you have 30 days to try give it back.

     

    I now have the vaio pro 13 which is good for my eyes, but i will return it. after it, i will order the flip 15a with ONLY the intel card. if, for whatever reason it hurts my eyes, i will return it and will order a vaio pro 13 again, for keeps. but, i would rather have the hybrid laptop/tablet as an IPAD or Samsung tablet are killing my eyes ;-) but i love the possibilities of a tablet.

  • Jessiah1 Level 1 Level 1 (0 points)
    Currently Being Moderated
    Feb 25, 2014 6:10 AM (in response to wimpytron)

    I have been following this silently for a few days now, Wimpytron you certainly have my attention because I would like to try this model as well however I do have a concern before purchasing as it seems there are many different levels of sensitivity to LED light among us. Below I have posted an interesting paragraph about the specs of a Triluminos display, it sounds very interesting however they have replaced the white LED backlighting with a blue one. Blue LED lighting happens to be the worst for me in any form, almost piercing my brain like a knife! The interesting part is how they describe the color rendering is accomplished claiming true color wavelengths so my thought is perhaps the wavelengths of light are "Clean" without the harmful blue light spectrum? Who knows but I will try to get my hands on one of these somehow, do you think Best Buy will have one?

     

    "Triluminos technology enables a LCD TFT display to show a wider range of colors making images appear richer and more vivid. This color boost is said to be as much as 50 percent larger than that of a conventional LCD panel. The secret to this wider color range is the quantum dot. These light-emitting nanoparticles emit light at a specific wavelength, which the human eye then perceives as a specific color. Conventional LCD displays use a white backlight that passes through red, blue, and green filters to create colors. The problem with this approach is that the filters aren’t selective and forming very specific colors is hard. The result is that some colors can look washed out. With a Triluminos display, the white backlight is replaced by a blue LED, which emits a blue light that causes a film of quantum dots to produce pure green and pure red. The different wavelengths are then combined to make the colors needed."

     

     

    Jesse

  • Jessiah1 Level 1 Level 1 (0 points)

    Hi Gareth, I wanted to respond to your post about anti-glare coatings because I may be able to clear something up. If you are expecting the anti-glare coating to completely remove your symptoms from LED lighting you will probably be disappointed. For example, I am extremely sensitive to LED and the coating only helps in a minor way, extending my viewing time of my Iphone to 1-2 minutes versus 10 seconds or less. The addition of Prism is also minor for me however I will say that wearing the combination all day on a regular basis has helped me to view my phone for even 5-10 minutes at times reading articles or checking e-mail and even responding to emails. Another bonus since adding Prism has been the receding of what I would call moderate constant headaches, I have had the best last couple of months since adding Prism to my anti-glare coating, also my lens's are plano (No script for magnification because I have 20-15 vision) I have a measurement of 2 OT in each eye or a total Prism of 4. My eye's "drift" inwards when relaxed.

     

    After testing and working with my Optometrist on this we have come to this conclusion: The Anti-glare coating Prevencia helps filter %20 of harmful blue light waves emitted from LED lighting, this is helping to "Mute" the effects of spectrum which could be exacerbated by any flicker. The Prism I need is only slightly above average for normal eye "drift" and it is helping my eyes slightly by achieving a more relaxed state for them when focusing. The combination of the two is the most effective solution for me to date however I still cannot tolerate any LED light for any real periods of time. On the other hand I am very sensitive to fluorescent lighting as well and my glasses make that easily bearable for hours, sometimes up to 4 hours in fact without getting any symptoms. I won't get into detail on my theories about the difference between the two lighting sources however I will say fluorescent has a much softer perceived flicker than LED which could explain some of why it is more tolerable to most.

     

    In conclusion, if you are sensitive to fluorescent lighting Prism and Anti-glare may help you go shopping while there are still fluorescent lit environments out there but unfortunately when LED is adopted %100 my current glasses will be obsolete and ineffective. I would also encourage you to find Dr.'s who support researching your sensitivity further and who are supportive of trying new things to achieve results or you will end up against a brick wall fast.

     

    Best regards to all here in finding help!

     

    Jesse

  • tight_eye Calculating status...
    Currently Being Moderated
    Feb 25, 2014 8:04 AM (in response to RMartin111)

    Anyone else here who has discovered problems with a Google nexus 10?

    A week ago I bought a Tab 3 10.1 for my mum and I could look on the screen for the whole day. Then I bought myself this Nexus. Irritation right from the first look. I'm honestly getting desperated as I have no **** clue what's going on.

     

    Nexus has more than fhd resolution, tab has just crappy hd. But resolution is not the problem as I tried out a MBP and Air and it was horrible.Then I thought it might be contrast. Unfortunately this tab has 600:1 approx, is perfect and the MBA has also approx 600:1 and is horrible.

     

    IPS and TN also not the cause. Brightness and everything not, too.

     

    So my conclusion is it must be the screen itself but WHAT?

  • tfouto Level 1 Level 1 (0 points)
    Currently Being Moderated
    Feb 25, 2014 8:08 AM (in response to tight_eye)

    Are you sure it's not IPS vs TFT?

     

    No one knows for sure... blue light, drivers, color temperature...

  • tight_eye Level 1 Level 1 (0 points)
    Currently Being Moderated
    Feb 25, 2014 9:15 AM (in response to tfouto)

    Well the MBA has only TN. As well the classic MBP without retina. So this cannot be the cause.

  • wimpytron Level 1 Level 1 (0 points)
    Currently Being Moderated
    Feb 25, 2014 9:36 AM (in response to Jessiah1)

    jess,

     

    I was thinking about buying it...but one cannot buy every gadget to test ;-) Because, i shop in different stores, and and i already stores where you cannot have a refund. then you have to sell with a loss.... and if you explain this in a local store, they look at you like you're from Mars..... and they all have the same story "sir, please play with contrast or resolution...." so i "shop around" in different stores. the vaio pro 13 is from amazon. good to the eyes but in GERMAN ;-) but nice to try and next week I'll send it back.

     

    I really have no clue where it comes from, as some screen are good to the eyes and most ARE NOT.... we must kinda find an engineer of sony or HP or Samsung to tell us the real difference in the different screens/device types. radiation/frequency/screen driver/steering/... who will tell what it is ?

  • tight_eye Level 1 Level 1 (0 points)
    Currently Being Moderated
    Feb 28, 2014 1:21 AM (in response to RMartin111)

    Hey guys, I think I might have found the cause for my problems. I thought about it the whole night and came to the conclusion that is is 90% sure the contrast which is bothering.

     

    I had:

     

    - MB Air -> 600:1 -> bad but kind of tolerable

    - MB Retina -> 950:1 -> very bad symptoms

    - Lenovo Thinkpad Yoga -> 800:1 -> just bad

    - Dell 7440 -> 850:1 -> just bad

    - iMac -> 1000:1 -> bad

    - Macbook Pro -> 600:1 -> bad

     

    Now the machines I can use with comfort:

     

    - Sony Vaio VPCY 11/21 S1ES -> 180:1 -> perfect

    - BenQ FP91 GX -> 550:1 native but use with 39% contrast -> approx 200:1 -> perfect

    - Toshiba Portege Z30 -> 200:1 -> okay but screen door effect

     

    Think about it and I would like to here any comments about that. Please try one time a machine with lower contrast as above and report back your foundings.

     

    Thanks.

  • tfouto Level 1 Level 1 (0 points)
    Currently Being Moderated
    Feb 28, 2014 2:51 AM (in response to tight_eye)

    Sony Vai Pro that some people are reporting as eye-friendly has a 1,215:1 contrast ratio.

     


    http://www.trustedreviews.com/sony-vaio-pro-13_Laptop_review

     

    A friend of mine has one, i notice that is not totally glossy. It has a slighty mate. But is really subtle. Have you guys who have the sony vaio pro 13 noticed?

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