Quote: (10-09-2015 02:46 PM)metal fan Wrote:
i bought a cheap 10000 lux blue light box, its good for sleep but the side effects are headache and blurry vision
Was it designed specifically as a medical lamp? I wouldn't advise using general-purpose light boxes (for greenhouse, room lighting or other uses). Medical ones are UV-filtered.
Mine produces white light and I haven't had any issues with headaches nor blurred vision. I use it for about 1-1.5 hours each morning while reading.