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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 26
Revision Level
Supercedes
Committee CH/172/3
Publish Date Document Id Type View
Sept. 19, 2019 PD ISO/TR 21958:2019 Revision