I have seen so many of us wanting a place to get Standard, and other standards. I just got an E. Mail from 20/20 Magazine for the "Opticians Handbook" on line. I think (hope) it's free. But anyway I subscribed and have only glanced at it. The Standards for Spectacle lenses both safety and otherwise are in there as well as a lot of other helpfull information.
I don't work for these people but it looks worth your checking out.
Chip
http://www.opticianshandbook.com/Con...e-471a81bbd4f6
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