: Do computer lens have side effects? I was introduced by a spectacles shop about a new technology called computer lens which block blue light that is harmful to eyes. He says it reduces eye-strain for workers who need to be

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Do computer lens have side effects?
I was introduced by a spectacles shop about a new technology called computer lens which block blue light that is harmful to eyes. He says it reduces eye-strain for workers who need to be face a computer monitor for hours every day.

More importantly, are there any side effects or harmful effects that one need to be aware about computer lens? I am fine with paying more but not ok if the "gimmick" is harmful to my eyes.

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