The latter is the case. It helps in a prosaic fashion to minimize the negative consequences of exposing the eyes to blue light of a narrow frequency range for prolonged periods, and the nature of screen displays having an unpleasant aspect in the way images are generated and displayed. But this technology will not filter out or protect from any subliminal programming associated with the content transmitted by such devices. That is an upstream contamination that eventually becomes all-pervasive.
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