TS EN ISO 13666
Ophthalmic optics - Spectacle lenses - Vocabulary
This document defines terms relating to ophthalmic optics, specifically to blanks, finished spectacle lenses and fitting purposes
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About This Item
TS EN ISO 13666 is a vocabulary standard for ophthalmic optics, with particular focus on terms used for spectacle lens blanks, finished spectacle lenses and fitting-related purposes. Standards of this type help different parties in the eyewear chain use the same technical terms with the same meaning, which reduces ambiguity in design, specification and communication.
How the lens vocabulary is organised
In ophthalmic optics, a blank is the semi-finished lens material or form before final edging or finishing, while a finished spectacle lens is ready for use in spectacles. This distinction matters because the same lens can be discussed in different technical contexts as it moves from manufacturing through finishing to fitting. Terms related to fitting concern how the lens is positioned and integrated into the eyewear system, so they connect geometry, mounting and practical use.
What this document contributes in practice
The document covers fundamental terminology in ophthalmic optics; it is a terminology standard rather than a performance standard. Its practical value lies in consistency: it supports clearer product descriptions, laboratory records, technical discussions and educational material by keeping the language around spectacle lenses and related processes aligned.
- Clarifies the distinction between blanks and finished spectacle lenses.
- Brings core ophthalmic optics terms into a common technical language.
- Supports correct use of fitting-related terminology.
- Helps reduce ambiguity in technical documentation and product descriptions.
- Publication Date: 29.04.2019
- Standard Status: U (Yürürlükteki Standard/Standard)
- Publisher: TSE
- Document Language: en
- ICS Classification: 11.040.70 Oftalmik Ekipmanlar; 01.040.11 Sağlık Teknolojisi(Terimler)
- Pages: 82
- Source Standard: EN ISO 13666:2019
- International Equivalents: EN ISO 13666-EQV; ISO 13666-EQV
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