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BSI PD ISO/TR 21958:2019

Ophthalmic optics. Review of the test methods used to assess scratch and abrasion resistance of spectacle lenses
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BSI PD ISO/TR 21958:2019

Ophthalmic optics. Review of the test methods used to assess scratch and abrasion resistance of spectacle lenses

PUBLISH DATE 2019
PAGES 26
BSI PD ISO/TR 21958:2019

This document describes the most commonly used test methods considered in standardization work relating to *scratch and abrasion resistance* of plastic spectacle lenses along with their technical capacities and limitations.

It includes the ISO test method for assessment of claims for basic abrasion resistance in ISO 8980-5.

This document is intended to be of benefit to any future interest in ISO standardization on scratch and abrasion resistance of spectacle lenses.

SDO BSI: British Standards Institution
Document Number ISO/TR 21958
Publication Date Sept. 19, 2019
Language en - English
Page Count
Revision Level
Supercedes
Committee CH/172/3
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