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I thought the FDA requires 2.0 CT on glass lenses, how can these be ground thinner?

April 26, 2017CT fda glass ground lenses requires thinner

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I thought the FDA requires 2.0 CT on glass lenses, how can these be ground thinner?

1 Answer

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Neither FDA nor ANSI requires a minimum thickness. The requirement is that chemically tempered lenses must pass the FDA drop ball test for dress eyewear.