These are the commonalities I've observed from people like us or on subreddits and what set off their sensitivity to screens. Note that this isn't some definitive list, just my own observations. So if you disagree or observed otherwise, please chime in. This is ordered from most seen to less:
- New Device - pretty much it. They got a new device, usually a phone or a macbook, and they started immediately noticing symptoms of eye strain/fatigue, full body fatigue, dizziness, migraines, etc. Device more often than not (80%+) uses an OLED screen, but not always. Sometimes it's an LCD. What I see more often than not are that these are NEW devices, think 2020+ models. There are some rare cases where you see a user here posting pre-2018 that they started getting symptoms even back in the early 2010's, and a few even in the mid 2000's!
- Software/OS Update - They had a device that worked fine for years, never changed devices, but updated their device and now they can no longer handle the device. I've seen it so much that it really put in my head how much OS truly matters. It's not just the screen, the hardware, but the software side of things truly does matter.
- Covid Infection/Long Covid - Seen this very often. Some were completely fine "until I got covid and then couldn't handle any screens". Some got Covid and were still fine until long covid hit them and then everything fell apart.
- Neck Issues - Nothing much to expand here. They just have a bad neck and cite it as a source of why they are sensitive to screens.
- High Stress Event - Some people were completely good until a high stress event happened or even something not as acute, but rather a high-stress time in their life and then after that they couldn't handle screens.
- Bad/Inadequate Sleep - The amount of people here or on subreddits related to this who admit they sleep poorly is astonishing. I guess one could make the case that one of their symptoms from the screens IS poor sleep, but I think the reverse is true. Bad sleep causes worse symptoms and many are self-aware of this.
- Higher Screen Usage Relative to the Average Person - Many people here have careers in IT, are self-proclaimed gadget geeks, and love their devices. Their screen time is often more than the average person.
- Seb Derm/Inflammed Scalp - This one I would have to ask people directly but again I was astonished at people who admitted they too had seborrheic dermatitis or scalp psoriasis or some other inflammation of the scalp/head area. This makes sense to me as these are inflammatory conditions that are situated literally right next to the eye area, so the inflammation is just irritating nerves which then get further irritated from screen usage. I know for myself that curing my seb derm allowed me to drastically tolerate screens much more.
- Change in Medication - Witnessed people who were taking things like anti-depressants and they either changed drugs or drastically lowered their dosage and I think this was too much of a shock to their system which caused them to be unable to handle screens after this happened.
- Poor Diet - I actually think this could be more prevalent than what I witnessed but it takes both a very self-aware person as well as a disciplined person to recognize their diet is inflaming them and that it has an impact on all of this. Also nutrition is so nuanced that someone may think they are eating well when really they are inflaming themselves. Again it really takes a lot of self awareness.
Those are the 10 commonalities I've observed. I know 10 is a nice round number but I didn't plan to reach some top ten list or anything. It just worked out to 10 when I started really thinking it out. There are two other commonalities I speculate about but require more research:
- Little time spent outdoors. I just made a thread on this, so would love your help if you can click on my profile, go under 'posts', and give your input on the thread "How much time do you spend outdoors?".
- Inadequate recovery. This kind of goes hand in hand with poor sleep, as well as poor diet if you think about it, but I think users here have poor recovery times. I think most people in the world as affected by PWM and bad screens, but they are able to just sleep it off or take a nap if they really feel something is off and they just bounce back quickly. Us here, the symptoms just keep building. We are unable to reset fully like they are able to.
Note that none of these exist in a vacuum. I think all of this is connected to each other and is a variable in why we are unable to process screens. For instance for me, I changed my device (to a Dell 2208 WFPt monitor), changed my OS to Windows 10 1809 (from windows 11), cured my seb derm, and improved my diet and I've made MAJOR improvements in my ability to tolerate screens yet I'm not fully there yet. I still get symptoms. Why? Because my neck is still bad.
Having said that, there are some users where they change one variable, likely the thing that affected them the most, and they say it fixed their issues and it all revolves around that. This is why you see some people fixate so much on PWM, on OLED, etc. Because they fixed that variable and their issues went away. This is just as valid but I think we need to start seeing things from a multi-faceted point of view because again for many of us, none of this exists in a vacuum.
What I extrapolated from all these observations is that this fundamentally, in my opinion, is an issue of nervous system dysfunction and inflammation. Screens, with their flicker/PWM/dithering/pattern glare, are bombarding a nervous system that may already be compromised (again due to poor sleep, poor diet, high stress, withdrawal from medication, covid/long covid) and this compounds with low-grade inflammation (that everything I listed before also cause) which causes the cascade of symptoms that everyone seems to fall under the same umbrella of.