Ophthalmic optics. Uncut finished spectacle lenses - Minimum requirements for spectacle lens surfaces claimed to be abrasion-resistant Ingestion-build-156411 unique reference number or external

unique reference number or external cross reference

the guidance to the specification is stated in performance terms rather than being specified by a detailed description of the equipment to be supplied

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What is BS EN 61067-3-1- Specification for glass and glass polyester fibre woven tapes about

Ophthalmic optics. Uncut finished spectacle lenses - Minimum requirements for spectacle lens surfaces claimed to be abrasion-resistant Ingestion-build-156411 unique reference number or external1 Scope This part of ISO 8980 specifies the requirement and test method for spectacle lens surfaces that are claimed to provide a basic level of abrasion resistance including those with coatings. A lens claimed to be abrasion resistant shall meet the requirements on both front and back surfaces. Lens powers and surface form is restricted for testing, however test results are applicable to claims for lenses and lens surfaces with identical properties