SIST EN ISO 24157:2008/A1:2020
(Amendment)Ophthalmic optics and instruments - Reporting aberrations of the human eye - Amendment 1 (ISO 24157:2008/Amd 1:2020)
Ophthalmic optics and instruments - Reporting aberrations of the human eye - Amendment 1 (ISO 24157:2008/Amd 1:2020)
Augenoptik und ophthalmische Instrumente - Verfahren zur Darstellung von Abbildungsfehlern des menschlichen Auges - Änderung 1 (ISO 24157:2008/Amd 1:2020)
Optique et instruments ophtalmiques - Méthodes de présentation des aberrations de l'oeil humain - Amendement 1 (ISO 24157:2008/Amd 1:2020)
Očesna optika in instrumenti - Postopek prikaza aberacije človeškega očesa - Dopolnilo A1 (ISO 24157:2008/Amd 1:2020)
General Information
- Status
- Published
- Public Enquiry End Date
- 19-May-2019
- Publication Date
- 12-Mar-2020
- Technical Committee
- VAZ - Healthcare
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 27-Feb-2020
- Due Date
- 03-May-2020
- Completion Date
- 13-Mar-2020
Relations
- Effective Date
- 01-Apr-2020
Overview
SIST EN ISO 24157:2008/A1:2020 is an important amendment to the European and international standard for ophthalmic optics and instruments, specifically addressing the reporting of aberrations in the human eye. This amendment, developed under ISO/TC 172 and CEN/TC 170 Committees, updates the original 2008 standard with refined definitions and mathematical representations to enhance precision in how eye aberrations are characterized and documented.
Aberrations-optical imperfections that affect image quality on the retina-are critical to understanding visual performance and designing corrective lenses and ophthalmic instruments. This standard amendment ensures consistent reporting terminology and calculation methods utilized by eye care professionals, researchers, and manufacturers worldwide.
Key Topics
Line of Sight Definition Update
The amendment refines the definition of "line of sight," describing it as the ray path from a point of interest in object space through the eye's entrance pupil, extending to the retinal point of fixation (commonly the foveola). This precise definition clarifies the segments involved in visual ray paths essential for aberration analysis.Incorporation of Sample Points in Analysis
The introduction of a new metric, represented as N - the number of sample points, facilitates standardized data sampling in aberration measurements, improving repeatability and data interpretation.Revised Mathematical Representations
Table E.1 includes updated Zernike polynomial coefficients for higher order aberrations, providing more accurate calculation formulas in terms of radial (ρ) and angular (θ) components and Cartesian coordinates (x, y). These polynomials model complex wavefront deformations, crucial for precise optical diagnostics.Harmonization of Terminology
The amendment aligns key terms with related ISO standards, including ISO 13666:2019, ensuring consistency across ophthalmic optics literature and regulatory documents.
Applications
Ophthalmic Instrument Calibration
Manufacturers of wavefront aberrometers, corneal topographers, and other diagnostic devices use this standard to ensure their instruments correctly interpret and report eye aberration data in a uniform manner.Custom Vision Correction
Clinicians rely on accurate aberration reporting when designing customized contact lenses, intraocular lenses (IOLs), and refractive surgery plans to optimize visual outcomes by correcting higher-order aberrations.Research and Development
Academia and industry researchers benefit from standardized aberration descriptors when conducting clinical studies, improving device algorithms, or developing novel optical materials.Regulatory Compliance
National standards bodies and regulatory agencies adopt this amendment to harmonize technical requirements for ophthalmic optics products, facilitating market approvals and quality assurance.
Related Standards
ISO 13666:2019: Defines terminology related to the optics and photonics of the human eye including "line of sight," ensuring conceptual alignment.
EN ISO 24157:2008: The original standard prior to the 2020 amendment, foundational for reporting eye aberrations.
ISO/IEC Directives, Part 2: Guides editorial principles for standards development, referenced for document preparation.
Standards on Ophthalmic Instruments (CEN/TC 170): Broader standards covering design and performance of vision-related equipment.
Keywords: ophthalmic optics, human eye aberrations, wavefront aberrations, line of sight, Zernike polynomials, optical aberrations reporting, ophthalmic instruments, eye diagnostics, customized vision correction, ISO ophthalmic standards.
Frequently Asked Questions
SIST EN ISO 24157:2008/A1:2020 is a amendment published by the Slovenian Institute for Standardization (SIST). Its full title is "Ophthalmic optics and instruments - Reporting aberrations of the human eye - Amendment 1 (ISO 24157:2008/Amd 1:2020)". This standard covers: Ophthalmic optics and instruments - Reporting aberrations of the human eye - Amendment 1 (ISO 24157:2008/Amd 1:2020)
Ophthalmic optics and instruments - Reporting aberrations of the human eye - Amendment 1 (ISO 24157:2008/Amd 1:2020)
SIST EN ISO 24157:2008/A1:2020 is classified under the following ICS (International Classification for Standards) categories: 11.040.70 - Ophthalmic equipment. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN ISO 24157:2008/A1:2020 has the following relationships with other standards: It is inter standard links to SIST EN ISO 24157:2008. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN ISO 24157:2008/A1:2020 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2020
Očesna optika in instrumenti - Postopek prikaza aberacije človeškega očesa -
Dopolnilo A1 (ISO 24157:2008/Amd 1:2020)
Ophthalmic optics and instruments - Reporting aberrations of the human eye -
Amendment 1 (ISO 24157:2008/Amd 1:2020)
Augenoptik und ophthalmische Instrumente - Verfahren zur Darstellung von
Abbildungsfehlern des menschlichen Auges - Änderung 1 (ISO 24157:2008/Amd 1:2020)
Optique et instruments ophtalmiques - Méthodes de présentation des aberrations de
l'oeil humain - Amendement 1 (ISO 24157:2008/Amd 1:2020)
Ta slovenski standard je istoveten z: EN ISO 24157:2008/A1:2020
ICS:
11.040.70 Oftalmološka oprema Ophthalmic equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 24157:2008/A1
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2020
EUROPÄISCHE NORM
ICS 11.040.70
English Version
Ophthalmic optics and instruments - Reporting
aberrations of the human eye - Amendment 1 (ISO
24157:2008/Amd 1:2020)
Optique et instruments ophtalmiques - Méthodes de Augenoptik und ophthalmische Instrumente -
présentation des aberrations de l'oeil humain - Verfahren zur Darstellung von Abbildungsfehlern des
Amendement 1 (ISO 24157:2008/Amd 1:2020) menschlichen Auges - Änderung 1 (ISO
24157:2008/Amd 1:2020)
This amendment A1 modifies the European Standard EN ISO 24157:2008; it was approved by CEN on 1 January 2020.
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, Turkey 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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 24157:2008/A1:2020 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 24157:2008/A1:2020) 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 24157:2008 shall be given the status of a national
standard, either by publication of an identical text or by endorsement, at the latest by August 2020, and
conflicting national standards shall be withdrawn at the latest by August 2020.
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.
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, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 24157:2008/Amd 1:2020 has been approved by CEN as EN ISO 24157:2008/A1:2020
without any modification.
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