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Is it recommended to get two different pairs of glasses for both near sightedness and far sightedness? I have a -3.5D with astigmatism as well. I get the feeling I'd require only less powered glasses for screen time as opposed to using my regular glasses for it. What is your professional opinion about this?

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I am not the expert you are replying to, and I have only anecdotal evidence. But for what it is worth, I have been using "computer glasses", which are midway between my reading- and distance vision prescriptions, for more than 10 years. I find that this prescription reduces eyestrain very significantly, and I can easily spend a whole day in front of the screen without fatigue.

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