What is ISO 8624 about?
ISO 8624 discusses spectacle frames for ophthalmic optics. ISO 8624 outlines a measuring system for spectacle frames and related vocabulary. It is applicable to spectacle frames with fronts that are intended to be symmetrical.
The boxed lens system of measurement and definitions of spectacle frames are based on rectangular boxes that circumscribe the lens shapes.
Who is ISO 8624 for? BS EN ISO 8624:2020 history
2020BS EN ISO 8624:2020 Ophthalmic optics. Spectacle frames. Measuring system and vocabulary