
I had a bad headache from working on the computer all day. I received them in the mail and started wearing them straight away and within 30 minutes I could feel the difference. I didn't strain to look at the screen and my head never hurt. I use it EVERY DAY for work and just surf online. They also help enlarge the screen so I can see better. The chart they recommend you worked really well for me. LOVE LOVE LOVE her!

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