FprEN ISO 16321-1

Eye and face protection for occupational use - Part 1: General requirements (ISO/FDIS 16321-1:2020)

This document specifies general requirements for protectors designed to provide protection for the eyes and
faces of persons against common occupational hazards such as impacts from flying particles and fragments,
optical radiation, dusts, splashing materials, molten metals, heat, flame, hot solids, harmful gases, vapours
and aerosols.
Additional requirements for protectors used during welding and related techniques and for mesh protectors
are given in ISO 16321-2 and ISO 16321-3.
This document applies to all afocal (plano power) and prescription lens protectors and components.
This document also applies to those articles of eye and face protection used for occupational-type tasks but
not performed as part of an occupation, e.g. "do-it-yourself".
This document does not apply to:
— sunglasses for general use for which ISO 12312-1 applies;
— protectors for medically prescribed applications (not occupational); e.g. eye protection for severe
dry eye, tints prescribed for medical conditions;
— protectors intended to control exposure of the eyes of patients during diagnosis or treatment (e.g.
ISO/DTR 22463);
— protectors for use during medical or aesthetic applications intense light sources (ILS) for which ISO
12609 series applies;
— protectors intended for direct observation of the sun, such as for solar-eclipse viewing for which
ISO 12312-2 applies;
— protectors specifically intended for sports for which ISO 18527 series applies;
— laser protectors, for which ISO 19818 applies;
— face protectors intended for live-working to protect against short-circuit electric arcs for which
IEC 62819 applies;
— protectors intended to protect against ionizing radiation for which IEC 61331-3 applies.

Augen- und Gesichtsschutz für berufliche Anwendungen - Teil 1: Allgemeine Anforderungen (ISO/FDIS 16321-1:2020)

Dieses Dokument legt allgemeine Anforderungen an Augen- und Gesichtsschutzgeräte fest. Diese Schutz-geräte sind dazu vorgesehen, die Augen und das Gesicht von Personen vor einer oder mehreren typischen beruflichen Gefährdungen, wie z. B. Aufprall von herumfliegenden Teilchen und Bruchstücken, optischer Strahlung, Staub, Spritzern von Flüssigkeiten, geschmolzenem Metall, Hitze, Flammen, heißen Festkörpern, schädlichen Gasen, Dämpfen und Aerosolen, zu schützen.
Zusätzliche Anforderungen an Augen- und Gesichtsschutzgeräte zur Verwendung beim Schweißen und verwandten technischen Verfahren sowie an Schutzgeräte aus Gewebe sind in ISO 16321-2 bzw. ISO 16321-3 enthalten.
Dieses Dokument gilt für:
- alle Plan-Sichtscheiben sowie Schutzgeräte in Form von Korrektionssichtscheiben (en: corrective lenses) und Korrektionssichtscheiben (en: prescription lenses) und deren Komponenten;
- diejenigen Augen- und Gesichtsschutzgeräte, die bei der Ausübung von Aufgaben des beruflichen Typs, z. B. Heimwerken, angewendet werden, die ähnlich einem Beruf ausgeführt werden;
- diejenigen Augen- und Gesichtsschutzgeräte, die in Bildungseinrichtungen angewendet werden.
Dieses Dokument gilt nicht für:
- Schutzgeräte, die speziell für den Schutz nur gegen Sonnenstrahlung und nichtberufliche Umgebungen vorgesehen sind, für welche die Normenreihe ISO 12312 gilt;
- Schutzgeräte für medizinisch verschriebene (nicht berufliche) Anwendungen; z. B. Augenschutz gegen trockene Augen, medizinisch verschriebene Tönungen;
- Schutzgeräte während Diagnose oder Behandlung von Patienten (z. B. ISO/TR 22463);
- Schutzgeräte, die für die Nutzung bei medizinischen oder z. B. ästhetischen Anwendungen vorgesehen sind, z. B. ILS-Anwendungen, für welche die Normenreihe ISO 12609 gilt;
- Schutzgeräte, die speziell für sportliche Aktivitäten vorgesehen sind, für welche die Normenreihe ISO 18527 gilt;
- Laserschutzgeräte;
- Gesichtsschutzgeräte, die bei Arbeiten unter Spannung zum Schutz gegen Störlichtbögen vorgesehen sind, für welche IEC 62819 gilt;
- Schutzgeräte, die zum Schutz gegen ionisierende Strahlung vorgesehen sind, z. B. Röntgenstrahlung für welche IEC 61331-3 gilt.

Protection des yeux et du visage à usage professionnel - Partie 1: Exigences générales (ISO/FDIS 16321-1:2020)

Zaščita za oči in obraz za poklicno uporabo - 1. del: Splošne zahteve (ISO/FDIS 16321-1:2020)

General Information

• Status: Not Published
• ICS: 13.340.20 - Head protective equipment
• Technical Committee: CEN/TC 85 - Eye-protective equipment
• Drafting Committee: CEN/TC 85 - Eye-protective equipment
• Current Stage: 6055 - CEN Ratification completed (DOR) - Publishing
• Due Date: 06-Nov-2020
• Completion Date: 06-Nov-2020
• Directive: 2016/425 - Regulation (EU) 2016/425 of the European Parliament and of the Council of 9 March 2016 on personal protective equipment and repealing Council Directive 89/686/EEC
• Mandate: M/571 - COMMISSION IMPLEMENTING DECISION of 19.11.2020 on a standardisation request to the European Committee for Standardization and the European Committee for Electrotechnical Standardization as regards personal protective equipment in support of Regulation (EU) 2016/425 of the European Parliament and of the Council
• Mandate: M/PPE - PPE
• Ref Project: kSIST FprEN ISO 16321-1:2020 - Eye and face protection for occupational use - Part 1: General requirements (ISO/FDIS 16321-1:2020)

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN ISO 16321-1:2018
01-julij-2018
=DãþLWD]DRþLLQREUD]]DSRNOLFQRXSRUDERGHO6SORãQH]DKWHYH,62',6


Eye and face protection for occupational use - Part 1: General requirements (ISO/DIS

16321-1:2018)
Augen- und Gesichtsschutz für betriebliche Anwendungen - Teil 1: Allgemeine
Anforderungen (ISO/DIS 16321-1:2018)

Protection des yeux et du visage à usage professionnel - Partie 1: Exigences générales

(ISO/DIS 16321-1:2018)
Ta slovenski standard je istoveten z: prEN ISO 16321-1
ICS:
13.340.20 Varovalna oprema za glavo Head protective equipment
oSIST prEN ISO 16321-1:2018 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN ISO 16321-1:2018
---------------------- Page: 2 ----------------------
oSIST prEN ISO 16321-1:2018
DRAFT INTERNATIONAL STANDARD
ISO/DIS 16321-1
ISO/TC 94/SC 6 Secretariat: BSI
Voting begins on: Voting terminates on:
2018-05-18 2018-08-10
Eye and face protection for occupational use —
Part 1:
General requirements
Protection des yeux et du visage pour les loisirs —
Partie 1: Exigences générales
ICS: 13.340.20
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 16321-1:2018(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. ISO 2018
---------------------- Page: 3 ----------------------
oSIST prEN ISO 16321-1:2018
ISO/DIS 16321-1:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
---------------------- Page: 4 ----------------------
oSIST prEN ISO 16321-1:2018
ISO/DIS 16321-1:2018(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

Introduction ................................................................................................................................................................................................................................vi

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 2

4 General requirements for protectors ............................................................................................................................................. 2

4.1 Ambient temperatures ..................................................................................................................................................................... 2

4.2 Physiological compatibility .......................................................................................................................................................... 2

4.3 Construction and adjustment ..................................................................................................................................................... 3

4.4 Cleaning and disinfection ......... ...................................................................................................................................................... 3

4.5 Headforms ................................................................................................................................................................................................... 3

5 Geometrical optical requirements for protectors ............................................................................................................. 4

5.1 Field of view .............................................................................................................................................................................................. 4

5.2 Refractive power and prismatic deviation for plano lenses ............................................................................ 4

5.2.1 Spherical and cylindrical power ......................................................................................................................... 4

5.2.2 Spatial deviation ............................................................................................................................................................... 4

5.2.3 Prismatic deviation for unmounted lenses covering one eye ................................................... 4

5.2.4 Prism imbalance of complete eye protectors or lenses covering both eyes ................. 5

5.3 Mounted prescription lenses ...................................................................................................................................................... 5

5.3.1 Optical ....................................................................................................................................................................................... 5

5.3.2 Positioning ............................................................................................................................................................................ 5

5.4 Single-vision ready-to-wear near-vision lenses (with corrective lenses)............................................ 5

5.5 Enhanced optical performances (Optional requirement) ................................................................................. 5

6 Physical optical requirements for protectors ........................................................................................................................ 6

6.1 Detection of signal lights ................................................................................................................................................................ 6

6.2 Luminous transmittance of lenses without deliberate filter action .......................................................... 6

6.3 Filter type specific requirements ............................................................................................................................................ 7

6.3.1 Ultraviolet (UV) protective filters...................................................................................................................... 7

6.3.2 Infrared (IR) protective filters ............................................................................................................................. 8

6.3.3 Sunglare filters for occupational use .............................................................................................................. 9

6.3.4 Filters for use in glass blowing .........................................................................................................................12

6.4 Uniformity of luminous transmittance and transmittance matching ...................................................12

6.5 Scattering of light ...............................................................................................................................................................................12

6.6 Frame transmittance .......................................................................................................................................................................12

6.7 Anti-reflective coated lenses (Optional requirement) .......................................................................................13

7 Physical and mechanical requirements for protectors .............................................................................................13

7.1 Area to be protected ........................................................................................................................................................................13

7.1.1 General...................................................................................................................................................................................13

7.1.2 Area to be protected by eye protectors .....................................................................................................16

7.1.3 Area to be protected by face protectors ....................................................................................................17

7.1.4 Lateral Protection ........................................................................................................................................................17

7.2 Headbands and harnesses .........................................................................................................................................................17

7.3 Quality of material and surface of mounted and unmounted lenses and filters .........................17

7.4 Basic Impact Level of complete protectors ..................................................................................................................17

7.5 Resistance to thermal exposure ............................................................................................................................................19

7.6 Resistance to ultraviolet radiation ......................................................................................................................................19

7.7 Resistance to corrosion ................................................................................................................................................................19

7.8 Resistance to ignition .....................................................................................................................................................................20

7.9 Penetration of vents.........................................................................................................................................................................20

7.10 High-speed impact resistance, Impact Level C, D, E (Optional requirement) ................................20

7.10.1 Protection at normal ambient temperatures .......................................................................................20

7.10.2 Protection at extremes of temperature .....................................................................................................21

© ISO 2018 – All rights reserved iii
---------------------- Page: 5 ----------------------
oSIST prEN ISO 16321-1:2018
ISO/DIS 16321-1:2018(E)

7.11 High mass impact, Impact Level HM (Optional requirement) ....................................................................22

7.11.1 Protection at normal ambient temperatures .......................................................................................22

7.11.2 Protection at extremes of temperature .....................................................................................................22

7.12 Resistance to surface damage due to flying fine particles (Optional requirement) .................23

7.13 Resistance to fogging of lenses or filters (Optional requirement) ..........................................................23

7.14 Protection against molten metals and hot solids (Optional requirement) ......................................23

7.15 Protection against droplets (Optional requirement) ..........................................................................................23

7.16 Protection against streams of liquids (Optional requirement) ..................................................................23

7.17 Protection against large dust particles (Optional requirement) ..............................................................24

7.18 Protection against gases and fine dust (Optional requirement) ...............................................................24

7.19 Protection against radiant heat (Optional requirement) ................................................................................24

7.20 Chemical resistance (Optional requirement) ............................................................................................................24

7.21 ATEX requirement (Optional requirement) ................................................................................................................25

8 Marking of protectors ..................................................................................................................................................................................25

8.1 General ........................................................................................................................................................................................................25

8.2 Mandatory markings on lenses/filters ............................................................................................................................26

8.3 Mandatory markings on frames ............................................................................................................................................26

8.4 Optional markings on lenses/filters ..................................................................................................................................27

8.5 Optional markings on frames ..................................................................................................................................................27

8.6 Examples of markings ....................................................................................................................................................................27

9 Information to be supplied by the manufacturer ............................................................................................................28

10 Allocation of requirements, test samples and application ....................................................................................29

10.1 General test samples .......................................................................................................................................................................29

10.2 Test samples for prescription lenses for eye protectors ..................................................................................34

10.2.1 Single-vision .....................................................................................................................................................................34

10.2.2 Bifocal and trifocal ......................................................................................................................................................35

10.2.3 Power-variation lenses ............................................................................................................................................35

Annex A (informative) Summary of mechanical impact levels in eye and face protection for

sunglass, occupational and sports use ........................................................................................................................................36

Annex ZA (informative) Relationship between this European Standard and the essential

requirements of Regulation 2016/425 aimed to be covered ..............................................................................37

Bibliography .............................................................................................................................................................................................................................39

iv © ISO 2018 – All rights reserved
---------------------- Page: 6 ----------------------
oSIST prEN ISO 16321-1:2018
ISO/DIS 16321-1:2018(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment,

as well as information about ISO's adherence to the World Trade Organization (WTO) principles in the

Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.

The committee responsible for this document is ISO/TC 94, Personal safety - Protective clothing and

equipment, Subcommittee SC 6, Eye and face protection.

This document cancels and replaces the ISO 4849:1979, ISO 4851:1979, ISO 4852:1979 and

ISO 4853:1979, which has been technically revised.
A list of all parts in the ISO 16321 series can be found on the ISO website.
© ISO 2018 – All rights reserved v
---------------------- Page: 7 ----------------------
oSIST prEN ISO 16321-1:2018
ISO/DIS 16321-1:2018(E)
Introduction

This family of documents was developed in response to the worldwide stakeholders' demand for

minimum requirements and test methods for eye and face protectors traded internationally. ISO 4007

gives the terms and definitions for all the various product types. The test methods are in the ISO 18526

series, while the requirements for occupational eye and face protectors are in the ISO 16321 series. Eye

protection for specific sports is mostly dealt with by the ISO 18527 series. A guidance document for the

selection, use and maintenance of eye and face protectors is in preparation.
vi © ISO 2018 – All rights reserved
---------------------- Page: 8 ----------------------
oSIST prEN ISO 16321-1:2018
DRAFT INTERNATIONAL STANDARD ISO/DIS 16321-1:2018(E)
Eye and face protection for occupational use —
Part 1:
General requirements
1 Scope

This document specifies general requirements for eye and face protectors. These protectors are

intended to provide protection for the eyes and faces of persons against common occupational hazards

such as impacts from flying particles and fragments, optical radiation, dusts, splashing materials,

molten metals, heat, flame, hot solids, harmful gases, vapours and aerosols.

Additional requirements for eye and face protectors used during welding and related techniques and

for mesh protectors are given in ISO 16321-2 and ISO 16321-3.

This document applies to all afocal (plano) and prescription lens protectors and components.

This document also applies to those products of eye and face protection used for occupational-type

tasks but not performed as part of an occupation, e.g. "do-it-yourself".
This document does not apply to:

— Protectors specifically intended for protection against sunlight for which ISO 12312 series applies;

— protectors for medically prescribed applications (not occupational); e.g. eye protection for severe

dry eye, tints prescribed for medical conditions;

— protectors intended to control exposure of the eyes of patients during diagnosis or treatment (e.g.

ISO/DTR 22463);

— protectors for use during medical or e.g. aesthetic applications, e.g. intense light sources (ILS) for

which ISO 12609 series applies;

— protectors specifically intended for sports for which ISO 18527 series applies;

— laser protectors for which ISO 19818 applies;

— face protectors intended for live-working to protect against short-circuit electric arcs for which

IEC 62819 applies;

— protectors intended to protect against ionizing radiation, e.g. X-rays, for which IEC 61331-3 applies.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 4007, Eye and face protection — Vocabulary

ISO 8980-1:2017, Ophthalmic optics — Uncut finished spectacle lenses — Part 1: Specifications for single-

vision and multifocal lenses

ISO 8980-2:2017, Ophthalmic optics — Uncut finished spectacle lenses — Part 2: Specifications for power-

variation lenses
© ISO 2018 – All rights reserved 1
---------------------- Page: 9 ----------------------
oSIST prEN ISO 16321-1:2018
ISO/DIS 16321-1:2018(E)

ISO 12312-1:2013, Eye and face protection — Sunglasses and related eyewear — Part 1: Sunglasses for

general use

ISO 18526-1: , Eye and face protection —Test methods — Part 1: Geometrical optical properties

ISO 18526-2: , Eye and face protection — Test methods — Part 2: Physical optical properties

ISO 18526-3: , Eye and face protection — Test methods — Part 3: Physical and mechanical properties

ISO 18526-4: , Eye and face protection — Test methods — Part 4: Headforms
ISO 21987:2017, Ophthalmic optics — Mounted spectacle lenses
ISO 11664-1:2007, Colorimetry — Part 1: CIE standard colorimetric observers
ISO 11664-2:2007, Colorimetry — Part 2: CIE standard illuminants

ISO 16034, Ophthalmic optics — Specifications for single-vision ready-to-wear near- vision spectacles

ISO 80079-36:2016, Explosive atmospheres — Part 36: Non-electrical equipment for explosive

atmospheres — Basic method and requirements
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 4007 apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at http:// www .iso .org/ obp.

For the purposes of this document, “protector” is used as a synonym for spectacles, goggles, face shields

and eye guards used for eye and/or face protection.
4 General requirements for protectors
4.1 Ambient temperatures

The protectors described in this document are intended for use at normal ambient temperatures

(23 ± 5) °C. Where critical aspects of protection are likely to be affected by temperatures towards

the extremes of the normal range of occupational environments (from -5 °C to +55 °C), physical and

mechanical requirements are included (sometimes optionally) to ensure protection is not compromised.

Physical and mechanical requirements are provided for validation of claims for protection at extremes

of temperature.
4.2 Physiological compatibility

Protectors shall be designed and manufactured in such a way that, when used under the conditions and

for the purposes intended, they will not compromise the health or safety of the wearer. The risks posed

by substances from the protector that can come into prolonged contact with the wearer, shall be reduced

1) Under preparation (Stage at the time of publication ISO/DIS 18526-1)
2) Under preparation (Stage at the time of publication ISO/DIS 18526-2)
3) Under preparation (Stage at the time of publication ISO/DIS 18526-3)
4) Under preparation (Stage at the time of publication ISO/DIS 18526-4)
2 © ISO 2018 – All rights reserved
---------------------- Page: 10 ----------------------
oSIST prEN ISO 16321-1:2018
ISO/DIS 16321-1:2018(E)

by the manufacturer to within the limits of any existing regulatory requirement. Special attention shall

be given to substances which are allergenic, carcinogenic, mutagenic or toxic to reproduction.

NOTE 1 Excessive pressure due to a poor fit on the face, chemical irritation or allergy is known to produce

reactions.. Rare or idiosyncratic reactions to any material are known to occur and the individual wearer is well

advised to avoid those types of frame materials.

Substances recommended for cleaning, maintenance or disinfection shall be known to be unlikely to

have any adverse effect upon the wearer, when applied in accordance with the instructions given in the

information to be supplied by the manufacturer.

Manufacturers/ suppliers shall provide appropriate information on potential harmful characteristics

of materials contained in the protector.
The following are examples of documents that can be provided:
a) specification of the material(s);
b) safety data sheets relating to the materials;

c) information relating to the suitability of the materials for use with food, in medical devices, or

other relevant applications;

d) information relating to toxicological, allergenic, carcinogenic, toxic to reproduction, or mutagenic

investigations on the materials.

NOTE 2 Specific national regulations with regard to restriction of certain chemical substances should be

observed, for example release of nickel in Europe.
4.3 Construction and adjustment

Protectors shall be free from projections, sharp edges or other features likely to cause discomfort or

injury during use.

Any part of the protector that can be adjusted, or removed by the wearer for the purpose of replacement

(in accordance with the instructions given in the information to be supplied by the manufacturer ),

shall be designed and manufactured to facilitate adjustment, removal and attachment without the use

of tools.

Any adjustment system incorporated in the protector shall be designed and manufactured to maintain

the intended fit for the foreseeable conditions of use.

The test shall be carried out by physical inspection according to ISO 18526-3: —, 6.1.

4.4 Cleaning and disinfection

The procedure for cleaning and disinfection, as described in the information to be supplied by the

manufacturer, shall not impair the performance of the protectors. All the tests shall be carried out after

subjecting the protector to the cleaning and/or disinfection procedures according to the information to

be supplied by the manufacturer.
4.5 Headforms

Unless the manufacturer specifies the headforms according to ISO 18526-4 that are compatible with

the protector, the test methods where headforms are required shall use the headform 1-M according to

ISO 18526-4 as the default.
© ISO 2018 – All rights reserved 3
---------------------- Page: 11 ----------------------
oSIST prEN ISO 16321-1:2018
ISO/DIS 16321-1:2018(E)
5 Geometrical optical requirements for protectors
5.1 Field of view

Protectors, in the as-worn position, shall have a minimum unobstructed field of view in front of each

eye of 30° temporally and nasally in the horizontal meridian, and 30° superiorly and inferiorly in

the vertical meridian, when measured at the centre at the corneal apex of the headform according to

ISO 18526-3:—, 6.2.

Protectors used for driving shall have a minimum unobstructed field of view in front of each eye of

60° temporally and 30° nasally in the horizontal meridian and 30° superiorly and inferiorly in the

vertical meridian, when measured at the centre at the corneal apex of the headform according to

ISO 18526-3:—, 6.2.
5.2 Refractive power and prismatic deviation for plano lenses
5.2.1 Spherical and cylindrical power

The lenses shall be tested at the reference points in the as-worn position according to ISO 18526-1:—, 6.1.

The spherical power and cylindrical power shall not exceed the tolerances given in Table 1.

Table 1 — Spherical, cylindrical power and prismatic deviation

Products Spherical power Cylindrical power Additional require- Prismatic deviation of

ments for mounted unmounted lenses (in
lenses, one-piece and any dir
...