Technical Report
ISO/TR 11797:2024
Ophthalmic optics – Spectacle lenses – Power and prism measurements
Reference number
ISO/TR 11797:2024
ISO/TR 11797:2024
Edition 1
2024-11
2024-11
© ISO 2024
Technical Report
Abstract
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.
General information
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Status: PublishedPublication date: 2024-11Stage: International Standard published [60.60]
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Edition: 1Number of pages: 50
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Technical Committee :ISO/TC 172/SC 7ICS :11.040.70
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