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Not bad...
I am stacking $5 non-prescription glasses as they are (see avatar... I don't have astigmatism... I am suffering only from too short arms :-) ) - +1 ~ +1.5 is for "normal" vision (including driving), +2.5 is for comp screen and both (+3.5 ~ +4) are for close-ups.
Yes, simple solutions are actually way better that all that technology that surrounds us more and more... and preventing us to think sometimes.. but then again simplicity doesn't create neither jobs nor money....
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