When reading about circadian light it helps to remember that the actual biological research is still a bit thin. There are a couple of studies out there that show that light of other wavelengths reduces the effect of the blue light on melatonin. Since the problem is normally caused by the bright white areas on the screen it is possible that all that is required is to turn down the overall brightness at night. Inciden…
This is the obvious change immediately made by anyone whose health is affected. If the lowest level of brightness were sufficient, users would not need to seek out apps like f.lux.