I used to get headaches and small blurry dots in my eyes from using computer screens for several hours. I've read that the blue light emitted by computer screens can cause vision problems. When I was looking for solutions, there were expensive blue light filters to cover my screens that didn't really work when editing photos as I needed to see real colors during the process. Then I saw the blue light blocking the glasses clip that I easily attached to my computer glasses. And the lens could be flipped up when I needed to see the full spectrum of colors for photo work. I can see my computer screen clearly despite my reading glasses and blue light blocking glasses, as well as my headaches and eye strain. It got easier once I started using KLIM OTG blue blocking lenses (and getting up every hour to focus on objects other than my computer screen). I am very happy that I bought them.
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