KM I would think that figuring out what is wrong with a lamp be way easier than with a laptop or computer display, given the system is rather simple and no software is involved. Instead...
I was looking at a comparison between LED and incandescent bulbs. Okay, the publisher is a company manufacturing LEDs, but the only mention to flicker is with regard to "Cycling (Turning On/Off)".
"LED... produce steady light without flicker...
Incandescent lights (similar to LED) do not generally flicker and/or cycle on and off as the bulb reaches the end of its useful life....Incandescent lights also turn on rather instantaneously and produce steady light generally without flicker."
Later on in the "Dimming" topic of the summary table, they write "LEDs are very easy to dim and options are available to use anywhere from 100% of the light to 0.5%. LED dimming functions by either lowering the forward current or modulating the pulse duration."
So maybe what we call flicker, here is called "pulse modulation". Still, there is no note at all about any potential symptom triggered by such pulsing. Is lowering the forward current the mechanism used in LED displays without PWM? Perhaps the LED that do not bother me work under constant current, not sure if this info is stated on the bulb specs. Also, most LEDs in public spaces like work office are non-dimmable. Do they still work under PWM?
I do not rule out color rendering index either. I wonder whether there are wavelengths that my eyes/brain cannot well digest.
Does anyone feel any difficulty concentrating / minor eyestrain when using incandescent bulbs, depending on the temperature of the filament / colder versus warmer light?