And a review of studies involving blue-light blocking lenses found mixed results, noting that often, researchers didn’t compare the effect of blue light to that of other light on people’s sleep, even though “exposure to even moderate light levels, in addition to short-wavelength light, can acutely suppress melatonin”.
Article source: https://www.huffingtonpost.co.uk/entry/does-blue-light-wreck-sleep_uk_69d8d0efe4b048dba44cb170