Multiple Choice
Which is not a requirement of a basic safety lenses according to ANSI standards?
A) Have a minimum center thickness of 3
B) Pass a drop ball test of a 1 inch diameter steel ball dropped 50 inches
C) Use the materials of either polycarb, Trivex or SR-91
D) Have a minimum edge thickness of 2.5 mm if the prescription is +3.00 or higher
Correct Answer:
Verified
Correct Answer:
Verified
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