It depends. Your body can make its own judge, it is what it is.
Ditto for this.
I once asked a question like why my eyes can never get any damage no matter how I harm it?. and have passed Air Force vision test(however failed in another test, sigh). So I think I am qualified to give some tips(as a crank hehe)
Pay attention to the alarms given by your body. In the last term, I have such an experience: sit in front laptop for over 30 continuous hours(IIRC, from 14:00 to the second day’s 20:00)until I can not open my eye anymore!
Just as lazycat said:
Finally, I realize some actions should be taken, otherwise, permanent harms will occur. So I leave my dear laptop and come out to run for 2 hours with varied pace, then do a series anaerobic exercises(precisely, varied pace run is also anaerobic exercise), like Pull-up from my zhihu and
Single leg squat from my zhihu. These exercises along with the upcoming sleep keep me away from the laptop for 12 hours successfully! I finally found my eyes cured when waking up.
Always use software like f.lux or redshift(prefer built-in night mode for windows10),
chenli-pc 福 ~/.emacs.d
880 ◯ : cat ~/.config/redshift.conf ⏎
; Global settings for redshift
[redshift]
; Set the day and night screen temperatures
temp-day=3200
temp-night=3200
The following options are what I have tried but don’t work(at least for me):
computer eyewear, whose function is repeated with f.lux and Reddit.
Upgrade your display. I also believed better display monitor can help protect the eye(because of the rate of refresh) because after selling my Dell U2417 and return to the default laptop’s screen(1600 /times 900). But I was atomized to the awful resolution later. Now, I think our adaptabilities are enough for