Which organization establishes tempered glass lens standards?

• A. ANSI
• B. FDA
• C. ISO
• D. ASTM

Answer: (A)

Standards for eyewear materials like tempered glass lenses come from a body that sets how products must perform and be tested to protect users. In the United States, that role is filled by ANSI, the American National Standards Institute. ANSI approves and publishes national standards such as ANSI Z87.1 for safety eyewear, which covers lens materials and their ability to withstand impact. Tempered glass must meet these impact-resistance requirements to be used in protective eyewear, so ANSI is the organization that establishes these tempered glass lens standards. The FDA regulates medical devices and labeling but does not set lens material performance standards; ISO handles international standards, and ASTM develops testing standards that are often adopted under ANSI’s framework in the U.S.