On my request, I got the fluorescent bulb closest to my desk changed from 3000 to 5000 K. At the moment of the swap, eyelid twitching was bothering me little and seldom, not sure if my eyes had adjusted a bit to the light or if other co-factors played a role, like diet or slightly better sleep. Note, I still badly suffered from eyestrain and poor concentration / performance.
At the change of the bulb, I found using my MacBook Air and my iMac was a bit more pleasant, however, at the same time I felt my eyes got more fatigued (I know it sounds a contradiction, but that is how I felt). Well, after three days under the new bulb, eyelid twitching returned, and way stronger. The weird thing is that it now affects almost exclusively the right eye, whereas earlier only the left eyelid twitched! At times it is so persistent, that I can not even work. I sometimes have twitching also outside the office, especially when I change my direction of view and when I am talking to people. But it gets really intense when I sit under the bulb. I wish I had some kind of meter to prove that. The onset of the twitching clearly coincided with the change of the bulb, apart from an incubation time of 2-3 days.
I was not expecting much from a change of the color of the light to be honest. I remind you that the same 3000 K bulbs are okay in the neighboring labs, where they run at higher power (I have not tested a 5000 K bulb at high power). So for some reason lower power makes the lamp bad for my eyes, whatever the color temperature.
