What is ISO/TR 21958 - Test methods to assess scratch and abrasion resistance of spectacle lenses about?

ISO/TR 21958 discusses ophthalmic optics. ISO/TR 21958 is an international standard that provides for review of the test methods used to assess scratch and abrasion resistance of spectacle lenses. ISO/TR 21958 outlines the most used test methods considered in standardization work relating to scratch and abrasion resistance of plastic spectacle lenses along with their technical capacities and limitations. ISO/TR 21958 includes the ISO test method for assessment of claims for basic abrasion resistance in ISO 8980-5 . ISO/TR 21958 is intended to be of benefit to any future interest in ISO standardization on scratch and abrasion resistance of spectacle lenses.

Who is ISO/TR 21958 - Test methods to assess scratch and abrasion resistance of spectacle lenses for?

ISO/TR 21958 on test methods to assess scratch and abrasion resistance of spectacle lenses is useful for:

PD ISO/TR 21958:2019 PDF

Abstract

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