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.<p>Incidentally, this effect might explain why people complain that typical office lighting isn&#x27;t bright enough to cause sufficient melatonin suppression during the day.