Materials glossary / Lens coating
Flash mirror coating
On the label: Flash mirror · Lens coating
What it is
A light mirror coating that adds color without cutting much light.
Lens coatings: Layers applied to a lens: anti-reflective, mirror, polarizing film, photochromic dye, scratch-resistant hard coat.
In the research
No PubMed papers mention this material with jewelry, allergy or eyewear; that is usual for findings and trade terms.
Other lens coatings
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.