The DayShield are glasses that block artificial blue light to be worn during the day, e.g. when working in front of a computer screen or LED lighting. They protect against eye strain and rapid energy loss due to overstimulation. They are also great for driving in the evening or night.
They block approximately 40% of blue light in the 455nm range, which is 3-30 times more than other glasses on the market. Other effects that can be obtained: reduction of chronic hyperactivity, brain fog, less fatigue after work, reduction or elimination of eye pain. After sunset, they are not sufficient protection, then it is worth getting the NightShield version.
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