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ISO/TR 11797:2024

Ophthalmic optics – Spectacle lenses – Power and prism measurements
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ISO/TR 11797:2024

Ophthalmic optics – Spectacle lenses – Power and prism measurements

PUBLISH DATE 2024
ISO/TR 11797:2024

This document describes the methods currently used in applying tolerances to the focal powers of spectacle lenses and methods that can be considered for adoption in the future; it also describes methods of measuring the prism imbalance (relative prism error) between the lenses of a mounted pair.

The results of a 2014 survey of manufacturing capability for lens power and a 2018 international web survey are discussed, as are possible new methods for applying tolerances to the focal power of spectacle lenses.

SDO ISO: International Organization for Standardization
Document Number ISO/TR 11797
Publication Date Jan. 1, 2024
Language en - English
Page Count 58
Revision Level
Supercedes
Committee ISO/TC 172/SC 7
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