SIST EN ISO 8980-3:2022/A1:2026

• Status: Published
• Public Enquiry End Date: 29-Jun-2025
• Publication Date: 16-Sep-2026
• ICS: 11.040.70 - Ophthalmic equipment
• Technical Committee: VAZ - Healthcare
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 04-Sep-2026
• Due Date: 09-Nov-2026
• Completion Date: 17-Sep-2026
• Ref Project: EN ISO 8980-3:2022/A1:2026 - Ophthalmic optics - Uncut finished spectacle lenses - Part 3: Transmittance specifications and test methods - Amendment 1 (ISO 8980 3:2022/Amd 1:2026)

• Amends: SIST EN ISO 8980-3:2022 - Ophthalmic optics - Uncut finished spectacle lenses - Part 3: Transmittance specifications and test methods (ISO 8980-3:2022)
• Effective Date: 01-Oct-2026

SIST EN ISO 8980-3:2022/A1:2026 is the Slovenian adoption of EN ISO 8980-3:2022/A1:2026, aligned with ISO 8980-3:2022/Amd 1:2026. It updates the transmittance specifications and test methods for uncut finished spectacle lenses, including claims about attenuation of solar radiation and wavelength cut, so it is relevant to lens makers, laboratories, suppliers and anyone checking declared optical performance.

What does SIST EN ISO 8980-3:2022/A1:2026 specify?

SIST EN ISO 8980-3:2022/A1:2026 amends EN ISO 8980-3:2022 for uncut and unmounted finished spectacle lenses. In practice, it keeps the focus on transmittance properties, while adding clearer provisions for performance claims and for the way those claims are reported and measured.

The amendment touches these parts of the base standard:

Part of the document	What this amendment addresses
Scope	Expands the wording to cover requirements and claims
Clause 3	Adds a definition for wavelength cut
Clause 6.7	Adds requirements for claimed wavelength cut
Clause 7.2	Revises uncertainty and measurement conditions
Clause 7.3	Updates the clause headings
Clause 8	Broadens the information that must be supplied
Annex G	Adds informative background on wavelength-cut measurement

What are the key requirements of SIST EN ISO 8980-3:2022/A1:2026?

SIST EN ISO 8980-3:2022/A1:2026 makes the standard more specific about what a manufacturer may claim and how that claim is checked. The practical effect is that a lens claim now needs to be tied to a defined measurement method, measurement uncertainty and product information.

Claimed wavelength cut

Clause 6.7 applies when a lens is claimed to have a wavelength cut at a nominated wavelength. The lens has to meet the transmittance limit at that nominated wavelength and also remain below the low-transmittance limit over the short-wavelength region immediately below it. This matters because the claim is not just a label - it has to be backed by a repeatable spectral measurement.

Clause 6.7 also says the claimed performance must still be satisfied after ultraviolet irradiation as specified elsewhere in the standard. For users, that means the claim has to remain valid after the lens has been exposed to the stated UV test condition.

Measurement uncertainty and test setup

Clause 7.2 tightens the uncertainty rules for spectral transmittance measurements. The allowed uncertainty depends on the measured transmittance level, with tighter limits for low-transmittance values. The requirement uses a 95 % confidence level, so laboratories need a controlled measurement system and a documented uncertainty approach.

Clause 7.2.2 gives the specific method for wavelength-cut claims. It calls for a spectrophotometer or equivalent device with wavelength accuracy and resolution suited to the task, operation across the UV-visible range used by the standard, and a narrow spectral bandwidth. In practice, this means the instrument must be able to resolve the short-wavelength edge properly, or the measured cut can shift.

The measurement is made on a plano lens of a specified thickness at the reference point, with the beam normal to the front surface. If a different thickness is used, that thickness has to be stated. For manufacturers and labs, this is important because thickness and geometry affect the result and must be controlled if results are to be comparable.

Information supplied with the lens

Clause 8 expands how the required information may be provided. The manufacturer or supplier may give it on the package, in an accompanying document, or through other separate information, including digital means such as a QR or data matrix code. The clause also adds claimed absorption or transmittance properties under the relevant clause references. This helps buyers, dispensers and inspectors trace the claim back to the product.

Why Annex G matters

Informative Annex G explains why wavelength-cut measurements can vary. It highlights the influence of lens thickness, lens geometry and spectrophotometer characteristics such as stray light and bandwidth. For readers, Annex G is useful background when comparing results between instruments or when validating a test method.

What terms does SIST EN ISO 8980-3:2022/A1:2026 define?

• Wavelength cut - the lowest wavelength at which spectral transmittance rises to a specified level.
• Spectral transmittance - the fraction of light transmitted by the lens at each wavelength, used to assess filtering behavior.
• Transmittance properties - the optical characteristics that describe how much light or radiation passes through the lens.
• Spectrophotometer - the instrument used to measure spectral transmittance over the required wavelength range.
• Full width at half maximum (FWHM) - the bandwidth measure used here to limit the spectral width of the measurement beam.
• Ultraviolet (UV) irradiation - the UV exposure used to verify that a wavelength-cut claim still holds after irradiation.
• Plano lens - a lens with no optical power, used here as the stated reference form for measurement.

Who uses SIST EN ISO 8980-3:2022/A1:2026?

SIST EN ISO 8980-3:2022/A1:2026 is used by spectacle-lens manufacturers, optical test laboratories, quality managers and conformity assessors. Manufacturers use it to define and support transmittance claims. Laboratories use it to measure spectral transmittance and wavelength cut. Buyers, suppliers and auditors use it to check whether product information and test results match the claimed optical performance.

What changed in SIST EN ISO 8980-3:2022/A1:2026 from the previous edition?

SIST EN ISO 8980-3:2022/A1:2026 modifies EN ISO 8980-3:2022 by:

• changing the scope wording so it covers requirements and claims;
• adding the term wavelength cut;
• adding Clause 6.7 for claimed wavelength cut;
• revising the uncertainty and measurement rules in Clause 7.2;
• adding detailed instrument and setup conditions for wavelength-cut claims;
• broadening Clause 8 so product information may be supplied digitally;
• adding informative Annex G on factors affecting wavelength-cut measurement.

Which standards are used with SIST EN ISO 8980-3:2022/A1:2026?

• EN ISO 8980-3:2022 - the base European Standard that this amendment modifies.
• ISO 8980-3:2022/Amd 1:2026 - the International Amendment that is adopted in this document.
• ISO/IEC Guide 98-3 - gives general guidance for evaluating measurement uncertainty.
• ISO 18526-2:2020, Annex B - provides lens-specific advice on uncertainty evaluation.

What does the SIST EN ISO 8980-3:2022/A1:2026 document contain?

The amendment contains targeted text changes rather than a full restatement of the standard. It updates the scope, adds one definition, adds a new requirements clause for wavelength-cut claims, and revises the measurement and reporting provisions.

Clause 7.2.2 gives the practical test conditions for spectral transmittance measurements used for wavelength-cut claims, including instrument range, resolution, bandwidth and lens positioning. Annex G gives explanatory background on how lens thickness and instrument characteristics influence the measured cut-off.

Clause 8 updates the information a manufacturer or supplier must provide and allows that information to be supplied in printed or digital form. This makes the standard easier to use in production, labeling, incoming inspection and laboratory reporting.

SLOVENSKI STANDARD
01-oktober-2026
Očesna optika - Nebrušena zglajena stekla očal - 3. del: Specifikacije za
prepustnost in preskusne metode - Dopolnilo A1 (ISO 8980 3:2022/Amd 1:2026)
Ophthalmic optics - Uncut finished spectacle lenses - Part 3: Transmittance
specifications and test methods - Amendment 1 (ISO 8980 3:2022/Amd 1:2026)
Augenoptik - Rohkantige fertige Brillengläser - Teil 3: Transmissionsanforderungen und
Prüfverfahren - Änderung 1 (ISO 8980 3:2022/Amd 1:2026)
Optique ophtalmique - Verres de lunettes finis non détourés - Partie 3: Spécifications
relatives au facteur de transmission et méthodes d'essai - Amendement 1 (ISO 8980
3:2022/Amd 1:2026)
Ta slovenski standard je istoveten z: EN ISO 8980-3:2022/A1:2026
ICS:
11.040.70 Oftalmološka oprema Ophthalmic equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 8980-3:2022/A1
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2026
EUROPÄISCHE NORM
ICS 11.040.70
English Version
Ophthalmic optics - Uncut finished spectacle lenses - Part
3: Transmittance specifications and test methods -
Amendment 1 (ISO 8980 3:2022/Amd 1:2026)
Optique ophtalmique - Verres de lunettes finis non Augenoptik - Rohkantige fertige Brillengläser - Teil 3:
détourés - Partie 3: Spécifications relatives au facteur Transmissionsanforderungen und Prüfverfahren -
de transmission et méthodes d'essai - Amendement 1 Änderung 1 (ISO 8980 3:2022/Amd 1:2026)
(ISO 8980 3:2022/Amd 1:2026)
This amendment A1 modifies the European Standard EN ISO 8980-3:2022; it was approved by CEN on 10 August 2026.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of
this amendment into the relevant national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This amendment exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8980-3:2022/A1:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 8980-3:2022/A1:2026) has been prepared by Technical Committee ISO/TC 172
"Optics and photonics" in collaboration with Technical Committee CEN/TC 170 “Ophthalmic optics” the
secretariat of which is held by DIN.
This Amendment to the European Standard EN ISO 8980-3:2022 shall be given the status of a national
standard, either by publication of an identical text or by endorsement, at the latest by February 2027,
and conflicting national standards shall be withdrawn at the latest by February 2027.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 8980-3:2022/Amd 1:2026 has been approved by CEN as EN ISO 8980-3:2022/A1:2026
without any modification.
International
Standard
ISO 8980-3
Fourth edition
Ophthalmic optics — Uncut finished
2022-06
spectacle lenses —
AMENDMENT 1
Part 3:
2026-08
Transmittance specifications and
test methods
AMENDMENT 1
Optique ophtalmique — Verres de lunettes finis non détourés —
Partie 3: Spécifications relatives au facteur de transmission et
méthodes d'essai
AMENDEMENT 1
Reference number
ISO 8980-3:2022/Amd.1:2026(en) © ISO 2026

ISO 8980-3:2022/Amd.1:2026(en)
© ISO 2026
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ii
ISO 8980-3:2022/Amd.1:2026(en)
Foreword
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