ANSI Z80.3

On the label: ANSI Z80.3 · Standard and mark

What it is

The US standard for non-prescription sunglasses: UV transmission limits, impact resistance, optical quality. Lenses sold as UV400 or '100% UV' are tested to it.

Standard and marks: The marks, tests and laws behind the words on a label: karat stamps, UV400, ANSI Z80.3, the FTC Jewelry Guides, Prop 65.

In the research

No PubMed papers mention this material with jewelry, allergy or eyewear; that is usual for findings and trade terms.

Other standard and marks

Karat (k, kt)Fineness (925, 750, 585)Hallmark Mohs hardness scale Carat (ct)FTC Jewelry Guides Nickel-free Hypoallergenic Nickel allergy Lead in jewelry Proposition 65 FDA impact test (21 CFR 801.410)

Clasp & Lens describes materials from the public record and does not appraise, grade or test pieces; what a listing states is the supplier's statement. If a piece causes a rash, take it off; a reaction that spreads or blisters is a doctor's question, and sunglasses are no substitute for impact-rated eye protection where that is required.