Some time ago wrote me at this point about the harmful for our eyes or the retina blue light in the light of "energy saving lamps" fluorescent lights and computer screens.
This too high a proportion of blue light is not only to hormone production relevant (interferes z. B. the pineal = pineal gland and its production of darkness hormone melatonin), but also can directly lead to damage to the retina, which can be virtually "burned".
Before I explained to me in detail the subject of "light biology," I asked, in fact, for me, which I often work several hours a day on the PC, regularly a sharp pain as it were "back in the eye" fixed.
So I was thinking, as announced here, finally a yellow PC Goggles to which I define now a day for more than three months.
My familiarization period was zero because my somewhat modified color spectrum (direction yellow) did not present any problems, either in writing or otherwise. I did the same to me the "Heavy version" so do not bother the "Light-glasses" risen, but thought , "more is better", because I do a lot of sitting.
The stabbing pain in the eye "background" stopped abruptly.
However: The yellow goggles can not prevent that, after a few hours of work (for me at least as approximately by 2 clock at night 
), Eventually gets dry eyes - to go a character to lose weight and sleep glasses ...
