Difference between revisions of Guide:Reducing differentials
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So, you should use OD/OS -2.5/-1.5, if 57cm is the main distance you perform [[close-up activity]]. Simple! | So, you should use OD/OS -2.5/-1.5, if 57cm is the main distance you perform [[close-up activity]]. Simple! | ||
If you get a positive number, read the caveats about [[plus lenses]]. | === Plus === | ||
If you have [[low myopia]] and get a positive number, read the caveats about [[plus lenses]]. | |||
==References== | ==References== | ||