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Yep lots of geeks and IT guys develop eye strain issues. So do a lot of book worms. So do a lot of people who focus continuously for a long time at a fixed, relatively close surface, whether that surface is reflective or emissive.
Yep, it probably is worse if it's a flickering emissive display out of harmony with the ambient light, which is quite a frequent problem for many people I'd suspect. The fixed nature of conventional screens can also be a factor.
Of course, there are a lot of people who have horrible hand/wrist pain from playing the piano or typing at the keyboard too. While I'm sure a lot of people in all realms complain and blame the device, my own (merely anecdotal) experience has been that piano people blame themselves more, while office/tech people blame the qwerty keyboard more.
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