What's in a Frame? ISO Releases New Standard for Glasses Frames
The International Standards Organization (ISO) released a new standard for glasses frames, saying a new standard was needed to "ensure that glasses manufactured everywhere in the world are safe to use" and adhere to "fundamental requirements."
ISO's standard, ISO 12870:2012, Ophthalmic optics - Spectacle frames - Requirements and test methods, includes outlined requirements for:
- physiological compatibility
- measurement
- dimensional tolerances
- tolerance on screw threads
- dimensional stability at elevated temperature
- resistance to perspiration
- mechanical stability
- resistance to ignition
- resistance to optical radiation.
"The standard includes guidelines for testing, inspection, compliance, marking and information labeling," explained ISO in a statement. "In addition, it provides recommendations for the design of spectacle frames."
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