This really does help to block blue light and helps to keep the eye strain and fatigue from overwhelming me when I'm on my computer doing online schooling or researching information. I have photophobia and get migraines so this works great. It was so easy to install & I really like that it adds privacy to my computer screen when doin my school work or online banking. I've noticed I can actually be on my computer for longer every since added this to my computer screen I noticed the difference like night/day. I'm so glad I bought this. I'm going to purchase 2 more one for my other desktop computer and another for my laptop. Thanks 4 making my life better so it helps cut down on migraine headaches when looking at my computer screen. I recommend this product, I promise you, that you qont regret buying it.
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