ISO 16321-1:2021/Amd 1:2024

Eye and face protection for occupational use — Part 1: General requirements — Amendment 1

ISO 16321-1:2021/Amd 1:2024

Name:ISO 16321-1:2021/Amd 1:2024   Standard name:Eye and face protection for occupational use — Part 1: General requirements — Amendment 1
Standard number:ISO 16321-1:2021/Amd 1:2024   language:English language
Release Date:04-Jul-2024   technical committee:ISO/TC 94/SC 6 - Eye and face protection
Drafting committee:ISO/TC 94/SC 6 - Eye and face protection   ICS number:13.340.20 - Head protective equipment

International
Standard
ISO 16321-1
First edition
Eye and face protection for
2021-03
occupational use —
AMENDMENT 1
Part 1:
2024-07
General requirements
AMENDMENT 1
Protection des yeux et du visage à usage professionnel —
Partie 1: Exigences générales
AMENDEMENT 1
Reference number
ISO 16321-1:2021/Amd.1:2024(en) © ISO 2024

ISO 16321-1:2021/Amd.1:2024(en)
© ISO 2024
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ii
ISO 16321-1:2021/Amd.1:2024(en)
Foreword
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This document was prepared by Technical Committee ISO/TC 94, Personal safety — Personal protective
equipment, Subcommittee SC 6, Eye and face protection, in collaboration with the European Committee for
Standardization (CEN) Technical Committee CEN/TC 85, Eye protective equipment, in accordance with the
Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
A list of all parts in the ISO 16321 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.

iii
ISO 16321-1:2021/Amd.1:2024(en)
Eye and face protection for occupational use —
Part 1:
General requirements
AMENDMENT 1
Scope
Add at the end of the second paragraph:
1)
"ISO 16321-4 provides requirements and guidance on protectors against biological hazards ."
and the following footnote:
1)
"  In preparation."
Clause 2, Normative references
Change the date of ISO 12312-1 to 2022.

5.1
Replace the two existing paragraphs with:
"Excluding face shields and eye shields mounted on another item of PPE that restricts the superior field
of view, e.g., a protective helmet, bumpcap, headgear or hood, protectors, when in the as-worn position
and measured at the corneal apices of the headform in accordance with ISO 18526-3:2020, 6.2, 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.
Face shields and eye shields mounted on another item of PPE that restricts the superior field of view,
when in the as-worn position and measured at the corneal apices of the headform in accordance with
ISO 18526-3:2020, 6.2, shall have a minimum unobstructed field of view in front of each eye of 30° temporally
and nasally in the horizontal meridian, and
— a minimum vertical field of view in the superior direction of not less than 7°, and
— a minimum field of view in the inferior direction of 30°, and
— a minimum field of view in the vertical direction (superior and inferior combined) of 60°.
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 corneal apices of the headform in accordance with ISO 18526-3:2020, 6.2."

ISO 16321-1:2021/Amd.1:2024(en)
6.3.3.2, Table 8
Amend the headers in columns 3 and 4, row 4 (change of < to ≤):

Table 8 — Transmittance requirements for sunglare filters for occupational use, code letter G
Optional infra-
Scale Visible
Wavelength range from 280 nm to 400 nm red spectral
number spectral range
range
Maximum Maximum Maximum Luminous Maximum
solar UV-B solar UV-A trans- mean 380 nm to transmittance solar IR trans-
transmittance mittance 400 nm transmit- mittance

tance
τ τ τ τ τ
SUVB SUVA 380 m380-400 v,D65 SIR
280 nm ≤ λ 315 nm ≤ λ 380 nm ≤ λ 380 nm ≤ λ 780 nm ≤ λ
≤ 315 nm ≤ 380 nm ≤ 400 nm ≤ 780 nm ≤ 2 000 nm

% % % % %
6.3.3.3
Replace the existing text with:
"Sunglare filters that meet the mandatory transmittance requirements given in Table 8 shall be marked
by code letter G. Sunglare filters of shade numbers 0, 1, 2 or 3 shall comply with the requirements of 6.1,
detection of signal lights, and shall be marked with G0, G1, G2 or G3. Sunglare filters of scale number G0, G1,
G2 or G3 are suitable for road use and driving.
Sunglare filters of scale number G4 comply with the requirements of 6.1 but are not suitable for road use and
driving.
Photochromic filters shall be identified and labelled with their shade numbers corresponding to their faded
state τ and darkened state τ , e.g. G0-2.
v,0 v,1
Sunglare filters that are claimed to meet the optional infrared transmittance requirements shall be marked
with the code letter GR."
6.3.3.4.2
In the second paragraph, delete code letter L and write as follows:
"When tested in accordance with ISO 18526-2:2020, 15.2, the polarizing efficiency, P, shall be ≥78 % for filter
categories G2, G3, G4 and ≥60 % for filter category G1.
NOTE 1 Filters of category G0 do not have any useful polarizing effect."

6.3.3.4.3
In the second paragraph, delete code letter L and write as follows:
".Table 8 and the detection of signal lights requirements from 6.1 (for filter number G0 to G3)…"

6.6
ISO 16321-1:2021/Amd.1:2024(en)
In the third paragraph, delete code letter GL4 and write as follows:
"Sunglare filters with the scale number G4 shall provide temporal shielding in accordance with
ISO 12312-1:2022, 11.2."
7.1.1
Replace the first paragraph with the following:
Figures 1 to 4 and Tables 11 to 14 describe the minimum areas on the headform to be protected. These
areas include both frontal and lateral protection zones. The areas indicated in Figures 1 to 4 are illustrative
only, and are not to scale, especially as the relative dimensions vary with the headform under consideration.
Refer to the data in the tables for the required dimensions.
NOTE The lateral protection has been clarified to align with that in many regional and national standards, eg, EN 166.
The dimensions of the headforms are defined in ISO 18526-4.
Replace Figures 1, 2, 3 and 4 with the following Figures:
a)  Lateral area b)  Frontal area c)  Lateral area as seen from the
front
Replace the key with the following:
Key
1 frontal eye protection zone
2 lateral eye protection zone
corneal apices and pupil centres (centres of the ellipse)
lateral canthus
resting point of the sides
a-e As defined in Table 11.
Figure 1 — Eye protection zone — Minimum area to be protected (basic impact)

7.1.1, Table 11
Replace by the following:
ISO 16321-1:2021/Amd.1:2024(en)
Table 11 — Dimensions of eye protection zone (basic impact level) for individual headforms based
on interpupillary distance and corneal apex position
Tolerance on dimensions ±0,5 mm
Dimensions in millimetres
Headform
Dimensions
see Figure 1
1-C12 1-S 1-M 1-L 2-S 2-M 2-L
a
a 58 60 64 68 63 64 70
b 24 36 40 42 33 35 40
c 20 25 28 29 23 24 28
d 8 9 12 13 7 8 9
e 10 mm around lateral canthus
...

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