2 English reference health requirements for children's corrective spectrum
3 standard basic information ICS 1 1.040.70
C 56
People's Republic of China (PRC) * * and China's health industry standard WS 2 19—20 15 "Hygienic Requirements for Children's Corrective Glasses" was compiled by the Chinese people * * by the National Health and Family Planning Commission of the People's Republic of China 20 15, 165438 (Guo Weitong [20/KLOC
4 on the release of "children and adolescents corrective glasses hygiene requirements" and other two health standards notice.
Guo Wei Tong [20 15]No. 16
Two health industry standards, such as Hygienic Requirements for Corrective Glasses for Children and Adolescents, are now released. Their numbers and names are as follows:
I. Mandatory health industry standards
WS 2 1920 15 Hygienic requirements for corrective glasses for children and adolescents (instead of WS? 2 192002)。
Second, the recommended health industry standards
WS/T 48020 15 health and safety standard for students' military training.
This standard came into effect on May 20 16, and WS 2 192002 was abolished at the same time.
This is a message for you.
National Health and Family Planning Commission (NHFPC)
20 15 1 1.8
5 Foreword 4. 1, 4.3 and 4.4 of this standard are mandatory clauses, and the rest are recommended clauses.
This standard was drafted according to GB/T1.1-2009.
Please note that some contents of this document may involve patents. The publisher of this document is not responsible for identifying these patents.
This standard replaces WS 2 19—2002 children's corrective glasses.
Compared with WS 2 19—2002, the main changes of this standard are as follows:
-Revising and adding normative reference documents;
-Some terms and definitions have been revised;
-Increased the requirement that children's glasses should choose lenses with high impact resistance;
-Increased transparency requirements for spectacle lenses;
-Increased requirements for nose pads for children's glasses;
-The allowable range of horizontal distance deviation and vertical mutual deviation of optical center in glasses assembly has been modified;
-The requirements for allowable deviation of prism degree and substrate direction have been modified;
-revised the assembly quality requirements of corrective glasses;
-The requirements for glasses in plastic surgery have been increased.
Drafting units of this standard: Beijing Ophthalmology Research Institute, Peking University Children and Adolescent Health Research Institute, Optometry Hospital affiliated to Wenzhou Medical College, and Beijing Tongren Optometry Center.
The main drafters of this standard are: Ma Jun, Lu Fan, Liu Weiguo, Sun, Zhang Lin, Li Wei, Yi Feng and Liu Lijuan.
This standard was first published in 2002.
Hygienic requirements for corrective glasses for children and adolescents in standard texts
6. 1 1? Scope This standard specifies the hygienic technical requirements, inspection methods and inspection rules for children and adolescents' corrective glasses.
This standard is applicable to glasses prepared for correcting ametropia and amblyopia of children and adolescents according to optometry prescriptions.
This standard does not apply to gradient multifocal glasses.
6.2 2? Normative citation documents The following documents are very important for the application of this document. For dated reference documents, only dated version is applicable to this document. For undated reference documents, the latest version (including all revisions) is applicable to this document.
GB 108 10. 1—2005？ Glasses and lenses? Part 1: monofocal and multifocal lenses
GB 108 10.3—2006？ Glasses lenses and related glasses products? Part 3: transmittance specifications and measurement methods
GB？ 135 1 1. 1—20 1 1? Wear glasses? Part 1: single light and multi-focus
GB/T？ 142 14? Glasses frame? General requirements and test methods
QB 2506—200 1？ Optical resin spectacle lens
ISO 2 1987: ophthalmic optics? Optical lens (mounted spectacle lens)
6.3 3? Terms and definitions The terms and definitions defined in ISO 2 1987: 2009 and the following terms and definitions apply to this document.
3. 1
Ametropia? Non-emmetropia
A class of eye diseases, including myopia, hyperopia and astigmatism, in which parallel rays cannot be focused on the retina without adjustment after entering the refractive system of the eye.
3.2
Correction? revise
Use glasses to correct all kinds of ametropia and improve vision.
6.4 4? Technical requirements 6.4. 1 4. 1? Glasses lens 4. 1. 1? The physical and chemical properties, vertex power tolerance, optical center deviation, thickness tolerance, color, internal defects and surface quality of glasses lenses should meet GB? 10810.1-2005 requirements 5. 1.2, 5. 1.4 ~ 5. 1.6, 5.2.2.
4. 1.2? Children's glasses should choose lenses with high impact resistance, and the impact index should meet the requirements of 4.7.6 in QB 2506—200 1.
4. 1.3? The transmittance of spectacle lenses shall meet the requirements of 5.2 in GB 108 10.3—2006 (see table 1). Unless otherwise specified, the measurement environment applicable to this part is 23℃ 5℃, and the requirements for various lens transmittance refer to the measured values obtained at the reference point of lens design. If not specified, the geometric center of the lens is the design reference point. The width of the measuring beam is not less than 5 mm in any direction, pretending to be a farsighted mirror or
Short-sighted lenses only need to meet the transmittance requirements in the visible spectrum. The relative deviation of light transmittance between the left and right lenses should not exceed 65438 05%.
Table 1? Requirements of glass transmittance
Visible spectral region
Ultraviolet spectral region
classify
τVa(380 nm ~780 nm)
τ Suwab (315nm ~ 380nm)
τSUVBc(280 nm~3 15 nm)
UV 1
& gt80%
≤ 1%
≤ 1%
UV2
1% & lt； τ Suva & lt 10%
Note: The anti-ultraviolet ability of glasses products is divided into three grades: UV 1, UV2 and UV3. This standard only requires UV 1 and UV2.
Light transmittance
Solar ultraviolet a-band transmittance.
B-band transmittance of solar ultraviolet.
6.4.2 4.2? Glasses frame 4.2. 1? The mechanical strength of spectacle frame, plating (coating) layer of metal parts, appearance quality and assembly accuracy meet GB/T? 142 14.
4.2.2? Glasses frames should indicate the age range of children and safety warnings.
4.2.3? Does the children's box selection meet GB/T? 142 14 full-frame glasses made of flat plate, plastic or metal.
4.2.4 Children aged 5-12 should choose a soft nose pad with safety silicone or a U-shaped nose pad spectacle frame.
4.2.5? The specifications, dimensions and other requirements of children's and teenagers' spectacle frames conform to the provisions in Table 2.
Table 2? Specifications, dimensions and scope of application of children's spectacle frames
Specification size
application area
Mirror ring
millimetre
ridge of the nose
millimetre
Temple length
millimetre
Frame width a
millimetre
External angle of temple
( )
Temple tilt
( )
Pupil distance range b
millimetre
Reference applicable age
year
38
14
125
104
52 2
five
39
14
128
106
53 2
6~7
40
14
130
108
54 2
eight
4 1
14
132
1 10
100
55 2
nine
4 1
15
134
1 12
56 2
10
Forty two.
15
137
1 14
6~8
57 2
1 1
43
15
140
1 16
58 2
12
Forty-four
15
142
1 18
59 2
13~ 14
45
15~ 16
145
120
95~ 100
60 2
15~ 16
46
15~ 16
147
122
6 1 2
17
A. The width of the mirror frame is the linear distance between the axes of the stud nuts on both sides of the mirror frame.
B The interpupillary distance should be based on optometry, for reference only.
6.4.3 4.3? The requirements for glasses are 4.3. 1? Glasses shall meet the requirements of 5.1351.1-2011~ 5.6 and 5.8.
4.3.2? The optical center of the lens should be located in the range of 2 mm above the horizontal line of the geometric center of the lens ring to below1mm.
4.3.3? Correcting the horizontal distance deviation between optical centers of glasses shall conform to the provisions in Table 3.
Table three? Allowable value for correcting horizontal distance deviation between optical centers of two lenses of glasses
Absolute value on meridian plane with maximum vertex power in horizontal direction.
D
Optical center horizontal distance deviation
millimetre
0.00~2.00
≤4.0
2.25~ 1 1.00
≤3.0
≥4.25
≤2.0
4.3.4? The unilateral deviation of the distance between the optical center and the pupil in the horizontal direction of corrective glasses should not be greater than 1/2 allowed by the horizontal distance deviation of the optical center.
4.3.5? Correcting the vertical mutual deviation of optical centers of glasses shall conform to the provisions in Table 4.
Table four? Allowable value of vertical mutual difference of optical center of corrective glasses
Absolute value of vertical vertex angle
D
Vertical deviation of optical center
millimetre
0.00~ 1.00
≤3.0
1.25~2.00
≤2.0
≥2.25
≤ 1.0
4.3.6? Correcting the axial deviation of the cylindrical lens of glasses shall comply with the provisions in Table 5.
Table 5? Correcting the axial deviation of cylindrical lens of glasses
Absolute value of vertex power of cylindrical lens
D
Allowable deviation of axial position
( )
≤0.50
six
& gt0.50~ 1.50
four
& gt 1.50~2.50
three
≥2.75
2
4.3.7? The allowable deviation of prism degree and substrate orientation of optometry prescription should comply with GB1351.1-201.
6.4.4 4.4? Does the assembly quality of corrective glasses meet GB? 13511.1-20115.8.
6.4.5 4.5? Plastic requirements 4.5. 1? The left and right mirrors of corrective glasses are relatively flat, and the mirror angle is 175 ~ 180.
4.5.2? The left and right stipules of corrective glasses are symmetrical.
4.5.3? The external opening angle of the left and right temples of corrective glasses is 95 ~ 100.
4.5.4? The temples on both sides are flat or flat, and the frame cannot be twisted.
4.5.5? The inclination deviation of the left and right temples shall not exceed 2.5.
4.5.6? When the corrective glasses are delivered for use, the assembly union will try them on according to the wearer's head shape, so that the corrective glasses can be worn tightly and comfortably. Adjust the curvature of the end of the temple to match the shape of the ear root and the bone behind the ear; Adjust the height and width of the nose pad to suit the nose bridge.
6.5 5? Inspection method is the inspection of corrective glasses in accordance with GB? 13511.1-2011shall be carried out according to the method specified in Chapter 6.
6.6 6? Inspection Rules The assembled corrective glasses should be inspected one by one and delivered only after they meet the requirements. Inspection items include lens top power tolerance, cylindrical lens axis tolerance, optical center horizontal tolerance, optical center vertical mutual tolerance, optical center height, prism degree tolerance, prism bottom azimuth tolerance, lens color mutual tolerance, lens thickness, lens surface quality and internal defects, glasses assembly quality and plastic requirements. One of the inspection items does not meet the requirements of this standard and is a nonconforming product.
Interpretation of Hygienic Requirements for Orthodontic Glasses for Children and Adolescents (WS 2 19-2002) has played an important role in standardizing the preparation of children and adolescents' glasses since it was published in 2002. In recent ten years, people have paid more and more attention to the safety performance of children's glasses, and the accuracy of glasses processing and testing equipment, the accuracy of processing technology, talent skills and the selectivity of lens products have been greatly improved. In order to ensure the safety and effectiveness of children wearing glasses and ensure the healthy development of children's eyes, the standards were revised according to the progress of materials and the requirements of new international and domestic standards.