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ABO NOCE Basic Opticianry

Category - Ophthalmic Products

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Which is not a requirement of a basic safety lenses according to ANSI standards?

Have a minimum center thickness of 3
Pass a drop ball test of a 1 inch diameter steel ball dropped 50 inches
Use the materials of either polycarb, Trivex or SR-91
Have a minimum edge thickness of 2.5 mm if the prescription is +3.00 or higher

Explanation

Answer: C - Using the materials of either polycarb, Trivex or SR-91 is not a requirement for basic safety lenses by ANSI.

A basic safety lens has different requirements than a safety high impact lens must have. However the safety high impact does require the use of the either polycarb, Trivex or SR-91.

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ABO NOCE Basic Opticianry

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