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- Jun 7, 2013
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- 10,480
I consider myself fortunate, only need 1.75 cheaters for reading and no correction for distance; both parents needed glasses by middle age or earlier.These 55 yr old eyes were also squinting...
I consider myself fortunate, only need 1.75 cheaters for reading and no correction for distance; both parents needed glasses by middle age or earlier.These 55 yr old eyes were also squinting...
Good to make accurate parts, but also good to have tolerances!It’s plus or minus 5 except the turned part but I hit the exact measurements so that I get practice making accurate parts
Zenni optical $6.95 For looking at my monitor I get about 1 less than my reading Rx (SPH + NV-ADD) , which allows you to see clearly from a comfortable distance. ie: If your SPH is +1 and nv-add is +2.5 then your reading Rx would be +3.50. So, get about +2.50 for reading your monitor.I consider myself fortunate, only need 1.75 cheaters for reading and no correction for distance; both parents needed glasses by middle age or earlier.
I have been getting mine from Costco --- about the same price.Zenni optical $6.95 For looking at my monitor I get about 1 less than my reading Rx (SPH + NV-ADD) , which allows you to see clearly from a comfortable distance. ie: If your SPH is +1 and nv-add is +2.5 then your reading Rx would be +3.50. So, get about +2.50 for reading your monitor.