Natural light or artificial light that recreates the natural light spectrum is good. Everything else is bad. There is an overabundance of sharp blue light in m

Natural light or artificial light that recreates the natural light spectrum is good. Everything else is bad. There is an overabundance of sharp blue light in most modern light sources. I highly recommend either using tinted computer glasses when working or something like f.lux Even worse are flickering lights. Even at a high (nearly imperceptible) frequency, I have seen so many colleagues(myself included) suffer from headaches due to them. What should be done? Either invest in better smoother lighting for your workers or let plenty of natural light inside.