ensete curious if you have any sinus issues.
Chronic sinusitis here. Never had surgery. Definitely saw a link to eyestrain.
I had never heard of this, thanks.
Gurm A lot of us have experienced "dry eyes" as a result of this issue.
I have recently been three times to an eye-doctor because of eyelid twitching. I was told I do not have dry eyes. Years ago I was told the opposite and recommended drops. So, I agree with you, eyestrain is not caused by dry eyes in my case.
After a mont of vitamin B12 drops and simple exercises like eye push-ups, my eyes got better. At work I can use various (shared) computers mounting Windows 7 Professional 64-bit (6.1, Build 7601) Service Pack 1, and graphic cards like Intel HD Graphics 4400, NVIDIA GeForce GT 710, Intel HD Graphics 530. There is another PC with Windows 10 Home 32-bit (10.0, Build 17763) and Intel HD Graphics 4000, which looks okay.
More important, I re-gained total control of my MacBook Air (13-inch, Early 2014) with Intel HD Graphics 5000 and macOS High Sierra. I uninstalled the updated Microsoft Office and re-installed the version prior to the eye problems, but I believe that was just a red herring. For unknown reasons, my eyes could hardly stand any artificial light from last November to until a month ago.
I am still very unhappy though. The configuration of my office desk was changed and I am half in the dark, half under a ceiling fluorescent lamp. As soon as I sit at my desk in the morning, my eyelids start dancing. I feel dizzy and unproductive, which generate a lot of anxiety and frustration. In this job I am quite free, so I often escape the office and sit elsewhere, possibly at a window, but this makes my work inefficient. Also, I need to use at my desk a virtual machine with Windows on an iMac 21.5" Late 2013 with Nvidia GeForce GT750M. This screen is quite troublesome, but the strain could come solely or mostly from the ceiling lamp. I will try to block the lamp sensor on a weekend when no-one is around, and see how I do with the iMac. In any case, it is not a permanent solution since I cannot force the person aside me to work in the dark. He has absolutely no issue with the ceiling lamp.
A few considerations/questions.
1) I still have decades to work, but I am skeptic I will see the day that at least lighting will be customizable in the office. I do not see why I should go thru this nightmare daily and even feel ashamed of telling my disturbs, just because most people do not suffer from a similar problem. We can hope that charities like lightmare.org make enough noise, but in my opinion until we have support/ evidence from a medical standpoint, there is no way out.
2) @martin et al. have resorted to optometrist treatment. I read about heterophoria. I sought help but where I am optometrists only sell glasses. The eye-doctor told me to sleep more and work less, and eventually he can inject some Botox to stop the twitching. My question is: if I can use my MacBook Air 10 hours in a row without problem at home, and minutes under the ceiling lamp at work kill me, is it still a problem of eye-teaming, convergence, etc. etc.? I feel dizzy even if I just talk to someone or sit there reading on paper, no electronics. Would the type of exercise @martin has been doing help? "My" push-ups seem to help only for computer-use, but I am unable to build tolerance against "bad" light.
3) In labs and other rooms there is the same type of ceiling lamps except the light is whiter and brighter. Those fluorescent lamps do not bother me. It looks like warmer light was chosen for offices. Can the light color make such a big difference? I always heard blu light is bad, and I have been trying to protect myself with Iris and orange glasses since. How come now that warm light is killing me? Does anyone know if the flickering of fluorescent light strongly depends on the emitted wavelength?