I bought this product because of the anti-reflective coating for my laptop. I didn't even think about or care about the blue light blocker. The screen immediately blocked the glare from the lights in my room. Hooray! I couldn't open the window because of the bright light. I live in a dungeon because of the bright light. No longer! All colors in this screen remain unchanged. Images and letters are just as sharp and clear as they were before the screen was installed. My laptop has a touchscreen and the touch feels almost as sensitive as it did before the screen was installed. It was easy to put on. The bubbles came out easily. Apparently I had some tiny black dots on my screen that I couldn't see until I installed the screen. To be fair, I didn't use the special sticker that came in the box to remove the dust, so those tiny black spots are my fault. Mine are so small I can't even see most of them. The only thing I can see - when I'm looking - is right in the main part of my screen. I can mentally blank out that speck - it's smaller than the period at the end of this sentence. I have no way of measuring or determining if the blue light blocking is effective. I am glad that I bought this product. I would recommend it.
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