Price: WHERE DOES BLUE LIGHT COME FROM? The primary sources of harmful indoor blue light are the TVs, smart phones, tablets and computers we use every day. WHAT ARE HARMFUL EFFECTS OF EXPOSURE? There are three concerning threats from blue light: 1. Damage to Vision 2. Loss of Sleep 3. Glare HOW MUCH BLUE LIGHT SHOULD YOU FILTER? You should filter only as much as you need to reduce the threat. First look at how much time you spend in front of your devices at night and use the MPF…
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