ISO 12870:2024

Overview - ISO 12870:2024 (Ophthalmic optics | Spectacle frames)

ISO 12870:2024 specifies fundamental requirements and test methods for unglazed spectacle frames intended for prescription lenses at the point of sale. This fifth edition updates and expands the standard to cover all mass‑produced frame types (including rimless, semi‑rimless and folding frames), frames produced by additive manufacturing (3D printing), frames made from natural organic materials, rimmed clip‑ons (frame/mount only) and prescription inserts. Parts of the standard are also applicable to custom‑made frames. It does not apply to eye‑protection frames (covered by ISO 16321‑1) or sunglasses with afocal filters (ISO 12312‑1).

Key topics and technical requirements

The standard combines design recommendations, performance requirements and detailed test methods. Major topics include:

• General construction and risk management requirements (Clause 4)
• Biological compatibility and clinical evaluation obligations for materials in contact with skin
• Optional nickel release testing (Clause 4.5) and links to regional nickel legislation (Annex C)
• Dimensional requirements: nominal size tolerances and dimensional stability at elevated temperature (Clauses 4.7–4.10, 8.2)
• Resistance to perspiration and chemical exposure (Clause 4.11, 8.3)
• Mechanical stability tests including bridge deformation, lens retention and endurance (Clauses 4.12, 8.4–8.5)
• Resistance to ignition and optional resistance to optical radiation tests (Clauses 4.13–4.14, 8.6–8.7; Annex E)
• Sampling, conditioning, inspection, marking and manufacturer information to support conformity assessment (Clauses 5–7, 9–10)
• Informative annexes with design guidance (Annex A), harmful chemicals (Annex B) and testing layouts (Annex D)

Practical applications - who uses ISO 12870:2024

This standard is essential for stakeholders involved in the design, production, testing and sale of spectacle frames:

• Frame manufacturers (including additive‑manufacture producers) for product design and quality control
• Test laboratories performing conformity and durability testing
• Optical retailers and supply chain for ensuring product safety at point of sale
• Regulatory and certification bodies assessing compliance with ophthalmic optics requirements
• Product managers and R&D teams developing new frame materials or clip‑on systems

Related standards

• ISO 16321‑1 (eye protection frames)
• ISO 12312‑1 (sunglasses / afocal filters)
• ISO 16034 (clip‑on lenses/filters) - note the frame/mount vs lens scope differences

Keywords: ISO 12870:2024, spectacle frames standard, ophthalmic optics, spectacle frame test methods, 3D printed frames, rimless frames, frame durability testing, biocompatibility, nickel release, dimensional stability.