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Another use for minus lenses - Printable Version
Eyesight Improvement Forum
Another use for minus lenses - Printable Version

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+--- Thread: Another use for minus lenses (/showthread.php?tid=2865)

Another use for minus lenses - Bifocal - 10-05-2014

I found this concept interesting.

http://vision-therapy-pa.com/published-articles/minus-for-some.html