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ISO/TR 11797:2024

Ophthalmic optics – Spectacle lenses – Power and prism measurements
6 nën 2024

General information

60.60     6 nën 2024

ISO

ISO/TC 172/SC 7

Technical Report

11.040.70  

anglisht   frëngjisht  

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Scope

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.

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PUBLISHED
ISO/TR 11797:2024
60.60 Standard published
6 nën 2024