GBZ35-2010 English PDF

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GBZ35-2010: Diagnostic criteria of occupational cataract
Status: Valid

GBZ35: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GBZ 35-2010	189	Add to Cart	3 days	Diagnostic criteria of occupational cataract	Valid
GBZ 35-2002	359	Add to Cart	3 days	Diagnostic Criteria of Occupational Cataract	Obsolete

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Basic data

Standard ID: GBZ 35-2010 (GBZ35-2010)
Description (Translated English): Diagnostic criteria of occupational cataract
Sector / Industry: National Standard
Classification of Chinese Standard: C60
Classification of International Standard: 13.100
Word Count Estimation: 8,874
Date of Issue: 2010-03-10
Date of Implementation: 2010-10-01
Older Standard (superseded by this standard): GBZ 35-2002
Quoted Standard: GBZ 2.2; GBZ 45; GBZ 95; GB/T 16180
Regulation (derived from): ?Health-Communication (2010) 6
Issuing agency(ies): Ministry of Health of the People's Republic of China
Summary: This standard specifies the principles of diagnosis and treatment of occupational cataracts. This standard applies to the diagnosis and treatment of occupational cataracts. Diagnosis of cataract lens of the eye caused by non- occupational factors can also refer to damage caused by use.

GBZ35-2002: Diagnostic Criteria of Occupational Cataract

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Diagnostic Criteria of Occupational Cataract ICS 13.100 C60 GBZ People's Republic of China National Occupational Health Standards Diagnostic criteria for occupational cataracts Released in.2002-04-08 2002-06-01 Implementation Issued by the Ministry of Health of the People's Republic of China

Foreword

Article 5.1 of this standard is recommended and the remainder is mandatory. According to the "People's Republic of China Occupational Disease Prevention Law" to develop this standard. Since the implementation of the standard date, the original standard GB 11502-1989 inconsistent with this standard, subject to this standard. Occupational cataract is caused by occupational chemistry, physical and other harmful factors caused by ocular lens opacity-based diseases, Can cause contact with varying degrees of visual impairment. In order to be able to early diagnosis and correct treatment, in order to protect the health of the system Fixed standard. Appendix A to this standard is an informative appendix, Appendix B, C, and D are normative appendices. This standard is proposed and centralized by the Ministry of Health of the People's Republic of China. This standard is drafted by the Third Hospital of Peking University, China Center for Disease Control and Prevention Occupational Health and Poisoning Control Add grass. This standard is interpreted by the Ministry of Health of the People's Republic of China. Diagnostic criteria for occupational cataracts Occupational cataract is caused by occupational chemistry, physical and other harmful factors caused by ocular lens opacity-based disease. can Not parallel to systemic disease.

1 Scope

This standard specifies the diagnostic criteria and principles of occupational cataract. This standard applies to the diagnosis and treatment of occupational cataracts.

2 diagnostic principles

There is a clear chemical, physical and other occupational hazards in the history of exposure to the lens lens opacity as the main clinical manifestations, Test the environment survey and the determination of chemical concentration in the air and radiation dose measurement data, comprehensive analysis, excluding other non Occupational factors caused by changes in the lens, can be diagnosed.

3 observation object

Have one of the following. a) follow the law to check, the lens around the back or a bit like a shadow; b) slit lamp microscopy, the lens around the posterior part of the pole is somewhat cloudy, the cortex is still transparent; or lens posterior pole There is a blister-like change. Generally no visual impairment. Diagnostic and grading standards 4.1 a cataract Have one of the following. a) thorough inspection, the lens around the shadow of the composition of the ring, the maximum ring width does not exceed the lens radius of 1/3; Or slit lamp microscopy to see the lens around the grayish yellow dotted cloudy; b) lens posterior subcapsular cortex was discoid opacity, anterior subcapsular cortex may also appear fine ocular cloudy. Generally do not affect vision. 4.2 Phase II cataract There are varying degrees of visual impairment, and has one of the following performance. a) Peripheral annular turbidity Maximum ring width exceeds 1/3 of the lens radius, but less than 2/3. Sometimes in the middle The central part of the ring turbidity, its range is equivalent to the size of pupil diameter; b) subcapsular cortex was honeycomb turbid, subcapsular subcortical turbid aggravated. 4.3 three cataracts The lens peripheral part of the turbidity than the lens radius of 2/3; or the central part of the dense point-like, discoid opacity; or crystalline Body all turbidity, there are obvious visual dysfunction.

5 Principles of handling

5.1 Principles of treatment According to conventional treatment of cataract treatment. Such as complete opacity of the lens, cataract surgery can be implemented, as appropriate with corrective eyes after surgery Mirror, conditional feasible intraocular lens implantation. 5.2 Other processing Occupational cataract lens opacity is irreversible damage, and can affect the visual function (central vision, vision). Where right Visually impaired, should be out of contact. 5.2.1 already lens opacity, and no obvious optic nerve damage, should also be appropriate to other work. 5.2.2 lens opacity, vision or vision is significantly damaged, should be appropriate to arrange rest, or engage in light work.

6 Correct use of the description of this standard

See Appendix A (informative), Appendix B, C, D (normative).

Appendix A

(Informative) Correctly use the instructions in this standard A.1 Occupational cataract pathogenic factors are mainly chemical and physical factors of two major categories, the clinical manifestations of common points for the lens is not The same degree, different parts and different forms of turbidity. Occupational cataract common clinical types and the main causes are as follows. a. Toxic cataracts, see Appendix C (normative); b. Non-ionizing radiation cataract, mainly microwave cataract, infrared cataract and ultraviolet cataract. Microwave white The internal barrier refers to the electromagnetic wave in the 300 MHz ~ 300 GHz frequency range or 1m ~ 1mm wavelength radiation caused by crystal Body damage; infrared cataract is a high temperature operating environment, heat radiation, that is shorter than the wavelength of 3 × 10-6m infrared radiation Caused by lens damage; exposure to ultraviolet light can also cause cataract; c. Ionizing radiation cataract radioactive cataract and cataract cataract. Electrical cataract mainly refers to the maintenance of live electricity Circuit, electrical appliances, or electrical insulation due to reduced electrical leakage caused by electrical contact with the surface after the shock caused The lens of the lens is cloudy. A.2 Occupational cataract diagnosis is mainly based on the shape of the lens lens opacity, characteristics, distribution and occupational factors to determine. In the occupational exposure history, the chemical factors caused by cataract should pay attention to the concentration of toxic substances operating environment; physical factors caused by cataract It is necessary to pay attention to the radiation dose of various radiation factors, if necessary, to simulate the scene to measure. A.3 is currently the most common for trinitrotoluene toxic cataract. It is characterized by the majority of the size of the cortex in the lens before and after Ranging from the gray and yellow small point-like turbidity, heavy in the central part of the pupil diameter and the same size of the ring or discoid opacity, thoroughly Photographic examination can be seen when the lens around the Ministry of the majority of wedge-like turbidity connected from the ring shadow. A.4 ionization caused by cataract in the protection, diagnosis and treatment of particularity, set up a separate diagnostic criteria. A.5 non-ionizing radiation caused by cataract problems, to be further summed up the experience.

Appendix B

(Normative appendix) Eye examination requirements and clinical observation B.1 thorough examination. in addition to the conditions of glaucoma, with 5% of the new forest or compound tropic acid amide dilute the pupil, With a direct ophthalmoscope to carry out thorough inspection. Focus on the lens, while attention to vitreous and fundus lesions. B.2 slit lamp inspection. after thorough examination, with slit lamp microscope on the lens changes in a detailed observation records (Mi Astigmatism and light section examination), and according to the following format marked lesions and range. B.3 ophthalmology general requirements. detailed history, routine external eye examination. Visual examination includes far, near vision and correction force. B.4 lens peripheral turbidity (with trinitrotoluene cataract as an example). B.4.1 lens peripheral part of the annular shadow for the majority of wedge-shaped turbidity connected, the wedge to the periphery, the tip point to the center. week There is a transparent band between the edge and the ring shadow. Slit lamp inspection Peripheral opacity is located in the anterior and posterior cortex and adult nuclei. B.4.2 central part of the circular turbidity and discoid opacity for the lens before the cortex of small gray yellow granular opacity, pupil area, Its diameter can be equal to the size of the pupil. B.4.3 The transparency of the lens cortex can be reduced as the lens periphery becomes cloudy. B.5 lens posterior subcapsular cortical opacity (with radioactive cataract as an example). B.5.1 lens posterior subcapsular opacity for the fine ocular turbidity, arranged in a ring, and gradually formed disc. Also to the cortex Deep expansion, the formation of pagoda-like appearance. Severe cases were honeycomb cloudy. B.5.2 Irregular striped turbidity around the discoid opacity and extend to the equatorial part. Before and after subcapsular cortex Turbidity often accompanied by vacuoles. B.6 visual impairment B.6.1 lens peripheral turbidity of the general no significant impact on the vision. B.6.2 lens before the central ring or discoid opacity, the latter part of the discoid turbidity or honeycomb turbidity, with the increase in opacity density Plus the scope of the expansion, can lead to varying degrees of visual impairment. Appendix C. (Normative appendix) Toxic cataract C.1 Occupational toxic cataracts are mainly due to long-term exposure to trinitrotoluene, naphthalene, thallium, dinitrophenol and so on Eye lens opacity change as the main performance of the eye disease. Trinitrotoluene cataract is the most common. Lens opacity Degree is related to contact time and contact quantity. C.2 trinitrotoluene poisoning cataract lens opacity morphology, distribution has obvious characteristics, with reference to the standard 4.1.a, 4.2.a, 4.3 and other provisions and Appendix B (normative appendix).

Appendix D

(Normative appendix) Ionizing radiation cataract D.1 Ionizing radiation cataracts include radioactive cataracts and cataract cataracts. D.2 Radioactive cataracts are exposed to X-rays (such as medical X-ray), gamma rays, neutron rays, etc. Ophthalmic lens ionization radiation damage. The diagnostic criteria and treatment principles refer to GBZ 95. ......

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