I recently got on Canada's medical cannabis program and I've been experimenting for about a month. I'm not sure yet if it's helped me or not in regards to my photosensitivity, but it's sure had lots of other benefits, especially with my other pain conditions and overall mood and well-being. I am doing a mix of balanced strains and also some pure THC strains, all dried. I tried oils but I prefer vaping.

I was able to switch from my BenQ EW2440L to my BenQ EW2750ZL, and with less eyestrain. That monitor is actually brighter than the EW2440L, so I have improved somewhat. Too early for me to tell if it will stick, or if it's a result of my recent experimentation.

One thing is it causes wicked dry eye if I dose too high. Small doses are fine.

Super-dosing CBD is very fad right now. The first doctor I went to see about medical cannabis wanted me on 40 mg of CBD a day, which is insane for the condition I presented with (mixed myofascial and neurpathic pain). There is no evidence to suggest that CBD alone is helpful for pain, and it has some immunosuppresant properties that we have no long-term data on. Low potency and balanced THC:CBD strains really temper the psycho-activity of cannabis anyway. I found that when I could control my setting, strain, dosage, and method of ingestion it ended up being nothing like some of the negative experiences I've had in the past.

  • JTL likes this.

My work rig:

Dual Dell CCFL 22" monitors (2209, I believe) driven by an nVidia Quadro K420, on a machine running Windows 10 with the 2015 LTSB (so it stays on build 1511).

My work laptop:

Dell XPS 13, 2015 edition with non-touch matte infinityedge screen. Also running LTSB so it stays at 1511. This screen is INSANELY comfortable. The machine is only an i5 with 8GB, the cpu is SUPER slow. But it looks great.

My home laptop:

Dell XPS 17", 2011 edition. First-gen Core i7 and nVidia 5xx combo. 3D LED screen. Windows 7. This is also insanely comfortable for me, for daily use.

My man-cave TV is an LG Plasma. Last one they made. 60PB6650. http://www.lg.com/us/tvs/lg-60PB6650-plasma-tv

My upstairs TV is a shitty bottom-of-the-barrel black-friday-special Toshiba LED. 49". It's not even a real Toshiba, it's some one-off panel they made for black friday at Best Buy. But it was $250. And I've got it calibrated so I can tolerate TV or PS3 on it.

    Gurm How's the Macbook working out for you?

    Which model and OS exactly?

    Just curious. Not having any problems with mine.

      15 days later

      My PC: Dell P2214H with old gigabyte Nvidia card. No eye strain

      Laptop: Dell P2214H with Intel 5500 graphics, no pain when correct ICC profile is loaded

      Other laptop: Ancient Lenovo T60, no eye strain

      a month later

      I get eye strain from PWM flickering and graphics driver. There may be other causes that I am not aware yet, but as far as I know, these are the causes that I have identified and confirmed.

      These are the list of devices that I can use without any eye strain whatsover:

      Laptop
      Lenovo Thinkpad T420s
      Screen brightness 100% and Intel Graphics Card set to Maximum Performance (to eliminate PWM)
      Intel graphics driver dated 2011. If I upgrade to any newer driver (e.g. dated 2013, 2015 etc), I get eye strain. Only the 2011 driver I get no eye strain whatsoever.
      Windows 7 Pro.

      Desktop
      CPU: Intel Core i5-4460
      GPU: PALIT gtx 760 jetstream 2G GDDR5
      Windows 7
      BenQ flicker free monitor (using VGA connector)

      Smartphones
      HTC One - SuperLCD3 display panel
      HTC One Max - SuperLCD3 display panel
      HTC M9+ Supreme Camera Edition - Super LCD3, Android 5.0

      TV
      Sony KDL-50W704A 50 inch LED Smart TV
      Samsung PS51F5500 51 inch Plasma Smart TV

      Here are some devices that I have tested and found to cause me eye strain:

      Smartphones - Note 5, Note 4, S3, S7 Edge, HTC U Ultra, LG V10, Huawei Mate 7, Lenovo phones etc
      Laptops - Lenovo T430, T440, T450, X1 Yoga
      TV - many Samsung and LG LED TVs (from looking at them in the store)

        Kray Smartphones - Note 5, Note 4, S3, S7 Edge, LG V10, Huawei Mate 7, Lenovo phones etc

        Yeah, I've tried Huwei phones in the past, yeesh are those screens painful

        • KM likes this.
          a year later

          @Gurm

          Do you still have the 2015 XPS and is it still ok? What GPU and other specs does it have?

          martin Aber hallo
          I have been using a MacBook Air (13-inch, Early 2014) since I changed job in January. At the start I had troubles but then I figured out eventually it was fluorescent and LED lights on the ceiling to drive me insane. Fearing for the worst, I have not updated the OS for the past 3 months. It is High Sierra 10.13.4.
          I would like to stress that in the past I always judged MacBook Air impossible for my eyes, by inspecting displays of friends or at electronic shops. That is another source of confusion for me, because normally I can immediately tell what does not suit me.

          As to phones, if you remember from my posts of early May I could not use my Samsung Galaxy On5 anymore without pain and strain after a software upgrade. I factory-reset the phone and I can use it again. I gave in exploring other phones. I bought three, last a Nokia 3310 3G, and, shocking, I cannot use that either. The screen is not the classic one of 15 years ago. It looks to me the usual useless upgrade. They did not improve anything except working hard to screw my eyes :-(

              Laptops: At work I use Dell Inspiron 15 3000 but not with latest the Dell display drivers. I have downloaded the Dec 17 drivers and i keep using these if win update changes to the latest drivers. At home I have an old Sony VPC 17 CCFL, however when i upgraded to Win 10 it does create some mild eye strain.

              Monitors: At work i use LG Flatron W1946 CCFL with very mild eye strain after long hours using Win 10

              Smartphones: Vodafone Prime 6 (2 years old) - no eye strain at all. I think TLC was the manufacturer for this phone.

              TV: i have a very old CCFL LG 42". I don't even remember the model but i will switch only if this TV dies.

              • KM likes this.

              Laptop: Lenovo Thinkpad Yoga 460 so long as the brightness is above 75% (I generally always have it maxed at 100%)

              Monitor: Benq BL2710 2k as the primary monitor.

              I am still not completely happy with the laptop and monitor though, but have had them without too many problems for the last 3 years or so.

              Phone: LG v30+ which does not appear to give me headaches, (even though testing shows pwm with an unusual waveform) however it is uncomfortable to look at below 40% brightness, where the pwm becomes noticeable.

              AGI I would like to stress that in the past I always judged MacBook Air impossible for my eyes, by inspecting displays of friends or at electronic shops. That is another bite of confusion for me, because normally I can immediately tell what does not suit me.

              I find this sort of inconsistency so baffling. I spent like an hour in a store with a Matebook D as I wanted to try Rzen to rule out the "intel is bad" theory. It was fine in the store. I bought it...came home and didn't even use it for a day. When I turned it on I got terrible strain within minutes. I cannot explain this. At home I sit by a well lit window...or use incandescent lighting...so if anything it should be BETTER at home than in a store with flourscent tubes. I nearly bought a Macbook Air after a couple hours in Best Buy didn't bother me...but I was hesitant to spend more so waited. A week later in an Apple like 3rd party store just 3min on one strained me. I cannot explain this. Same OS and both stores with flourescent lighting etc.

              At this point I am so nervous about displays in general I don't trust my own body as EVERYTHING seems to set off strain so I don't know what is caused by some tech issue, if anything, and what is anxiety/psychosomatic. Even my Kindle was giving me a headache the last time I used it and its NEVER bothered me. That just doesn't make sense. My old CCFL laptop strains me now too....not as much as new ones but still does. I don't get this.

                  hpst At this point I am so nervous about displays in general I don't trust my own body as EVERYTHING seems to set off strain so I don't know what is caused by some tech issue, if anything, and what is anxiety/psychosomatic.

                  I am 100% behind you on this one. I'm so confused as to what is the actual issue these days as I'm starting to think that my own anxiety about getting headaches and migraines is actually as strong a trigger as the screen I'm using. Sometimes I can use my Dell XPS 15 9560 for most of a day (with some breaks) and feel fine. Others it starts me on to a series of cluster headaches. I've wondered if switching between different screens relatively quickly might cause this - looking at my phone, the TV and then the laptop for example, but even with constant analysis of my own body I just can't explain why sometimes I'm triggered more heavily by the same tech than others.

                  I'm at the point where I feel envious of friends and my wife who can just sit on her phone all evening looking at Instagram without any pain, yet I'm unable to work or do the things that I enjoy such as gaming and music production without pain! I'm also concerned that persisting with a Macbook for 2 years has permanently damaged my eyes and this is why I am so sensitive now when only 8 years ago I used to do games development working on screens all day long before playing games all night and never get a headache. Now if I use screens for more than a few hours a day I'm almost guaranteed a headache the next day, which often develops into a series of migraines over several days.

                  Anyways, my working setup (which doesn't DEFINITEIVELY work but does mostly as long as I watch my hours):

                  Home Computer: Dell XPS 15 9560 running Windows 10 build 1511 + ditherig + Benq V2400W monitor - always gives strain without ditherig but I can use comfortably for a few hours (maybe even a day) with it running

                  Studio Computer: i7 8700 with GTX 760 running Windows 10 build 1511 + Benq V2400W monitor - extremely comfortable with no tweaking

                  Keep fighting the good fight everyone..

                      si_edgey I'm also concerned that persisting with a Macbook for 2 years has permanently damaged my eyes and this is why I am so sensitive now when only 8 years ago I used to do games development working on screens all day long before playing games all night and never get a headache.

                      I know its impossible not to worry and I do it too...but I really think this particular fear isn't very likely. If you have physical eye health issues they will impact every part of your life and will be discovered in eye exams...they wouldn't just manifest on certain displays. No rationalization for that makes sense without extreme reaching. I don't know about you but if I avoid displays for a while the strain and headaches go away so that's even more proof there is nothing wrong with me physically.

                      Things like "rodents lost retinal cells with blue light" sort of studies just fuel this fear and nothing helpful ever comes out of those anyway. If you've seen an eye doctor and don't have vision problems in every part of your life I think you can put that to bed as much as humanly possible.

                          hpst If you've seen an eye doctor and don't have vision problems in every part of your life I think you can put that to bed.

                          Thanks for this, I have had a few eye tests and none have found anything - my eyes are pretty much perfect. They probably thought I was weird for being a little disappointed.. :]

                              si_edgey Yeah it's disappointing not having an answer...even if that answer is not something we want to be true. I left my last eye doctor's visit sweaty and depressed from all the anxiety. My barrier now is deciding if this is technological or psychological....it's definitely amplified by the fear. Ruling out dithering as a global cause will help me here since that's the only technological theory left with any reasonable probability to it.

                              I've learned with other pains and symptoms that often if there is no discernable physical cause with thorough testing it's because there is no physical cause. A lot of people who had flourescent light problems back in the day didn't have them until someone mentioned the flickering etc...or it only bothered them at work in a job they hated but they were fine out having fun. But once you KNOW about a problem you can't let it go even subconsciously. I never had a problem with LEDs in general until I learned about PWM and got a newer laptop already primed for a problem...used to be big into LED flashlights etc but now am afraid to pick one up. When I see a big LED sign or billboard on the road...even whe its far away...I get instant eye pain/headache jabs just looking at it for 1-2 seconds....that's just doesn't really make sense and feels more conditioning than some actual problem.

                              Once we see and decide something it's hard to let go of that and the suggesting any pain can be psychosomatic feels like an insult. I am hoping ultimately this IS just psychosomatic since that means we are not just allergic to modern tech or to some setting we cannot really change....but its not easy to get to that point of acceptance and generally requires exhausting reasonable physical causes for our minds to believe it so don't know if I even can get there if nothing physical is proven.

                              • diop replied to this.

                                  si_edgey Maybe the monitors differ somehow. I have two "flicker-free" BenQ EW2740L, and one of them is worse for my eyes. I measured them with my oscilloscope at the same brightness and found they both flicker pretty identically at both 60 Hz (probably the pixel refresh flicker) and 25 kHz. But there is also a third frequency: ~450 Hz on the worse one and ~800 Hz on the better one. Those monitors are not really flicker-free and flicker differently.

                                  • hpst replied to this.

                                      KM KM can you test other displays and see if there is any correlation between these spikes and your strain? This is a simple test that would give us good data...if all straining displays have a 450hz spike etc then we have a lead...if it doesn't correlate then it's not the issue. This is a USB oscilloscope with software right? Could you take it to a Best Buy or Media Markt or whatever is in your country and get some broad data? We are seriously lacking in any reproducable data and every good and bad thing anyone has seems random and unexplainable.

                                        a month later

                                        hpst

                                        With regards to anxiety, the fact I am (right now) on a comfortable PC with no symptoms doesn't mean I am anxious about being on a computer, it's the fear that potentially all tech will be unusable for me within the next 5 years (yet is a compulsory part of modern life) that keeps me awake at night.

                                        We can all stockpile old tech, and there are still some stellar W7 builds that can still be made and we can still utilise 2000-early 2010's specs extremely well - but (if you want to stay online at least), it's not going to last forever.

                                        I'm in a bit of a moral quandry at the moment; unemployed but want to get back into work, but will computer work in an office become increasingly difficult due to everything being on W10 now and everything flickering/dithering? All medical professionals and optometrists boil it down to eye strain, nobody in a professional capacity is actually acknowledging the link between the modern output and our symptoms.

                                        Can more be done to push this issue in the public eye (facebook groups, online petitions, spamming support forums🙂). Are there direct insider contacts we can get hold of? Will an open source driver for Windows ever work? All these questions and unfortunately no solid answers yet.

                                          AGI and please don't update to 10.13.5 or higher. It seems that Apple has changed graphics drivers and rendering. Reverting my machine to 10.13.4 solved a lot of issues for me.

                                            si_edgey Could you please share how do you use the dell 9560 with the windows 10? How do you keep it from updating, is there a crack, or is it a cracked version? I had one before with old version of win and it was good, but I foolishly returned it.
                                            Also was installing the older version on it easy?
                                            I am considering getting one and trying it, but if it doesnt work id still need to return it as its quite expensive, so I must not mess it up.

                                              dev