“what is the focal length for these glasses? I am looking for reading glasses to use with a desk computer that is approximately 20 to 24 inches away from me”
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They work for that range..
Sorry, there was a problem. Please try again later.From my personal experience, I wouldn't recommend this Gunnar glasses for reading on your computer monitor. The Pwr +2.5 magnification is not accurate, therefore it is difficult to for me to see everything clearly on my 32" computer monitor. The letters and images were blurry as if the glasses were just a regular pair of glasses. On the other hand, it works very well with the phone.
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