GB 8283-1987 Diagnostic criteria and treatment principles for radiation cataract

GB 8283-1987 Diagnostic criteria and treatment principles for radiation-induced cataracts GB8283-1987 standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Diagnostic criteria and principles ofmanagement for radiation cataractUDC 616-07/-08
GB 8283—87
This standard applies to cataracts caused by occupational ionizing radiation exposure. Non-occupational radiation cataracts can also be diagnosed and treated with reference to this standard.
1 Diagnostic criteria
1.1 The eye has a clear history of being exposed to a large dose of external radiation once or in a short period of time (several days), or a long-term external radiation history exceeding the dose limit, with a cumulative dose of more than 2Gy (with dose records), and a comprehensive analysis and diagnosis is conducted in combination with health records. 1.2 Lens changes and staging standards
1.2.1 Stage I
There are fine punctate lesions in the subcapsular substance of the posterior pole of the lens, arranged in a ring and accompanied by vacuoles. 1.2.2 Stage II
Disc-shaped opacities and vacuoles are present in the posterior subcapsular cortex of the posterior pole of the lens. Worse still, irregular striped opacities appear around the disc-shaped opacities and extend toward the equator. The disc-shaped opacities may also extend deep into the cortex and may have a pagoda-shaped appearance. Fine punctate opacities and vacuoles may also appear in the anterior subcapsular cortex of the anterior pole, and vision may be impaired. 1.2.3 Stage III
Honeycomb opacities are present under the posterior capsule cortex, which are denser in the posterior pole and gradually thinner toward the equator, accompanied by vacuoles and rainbow spots. The opacity in the anterior subcapsular cortex worsens, and there are varying degrees of visual impairment. 1. 2.4 Stage V
The entire lens is opaque, with severe visual impairment. 1. Exclude cataracts caused by other factors, such as concurrent cataracts (high myopia, uveitis, retinitis pigmentosa, etc.), cataracts related to systemic metabolism (diabetes, tetany, long-term use of steroids, etc.), traumatic cataracts, cataracts caused by chemical poisoning and other physical factors, senile cataracts and congenital cataracts. 2 Treatment principles
2.1 Treatment can be with vitamins and other nutrients. If the lens is completely cloudy, cataract extraction can be performed, and artificial implantation can be performed if conditions permit. Corrective glasses can be fitted after surgery. 2.2 For those diagnosed with radiation cataracts, temporary or long-term withdrawal from radiation should be made according to the degree of cataracts and visual impairment, and reexamination should be conducted every six months to once a year: - Secondary lens.
Approved by the Ministry of Health of the People's Republic of China on December 10, 1987, and implemented on July 1, 1988
GB 288T
Appendix A
Requirements for eye examination
(Supplement)
Use the international standard eye chart to examine both near and far vision. Those with far vision less than 1.0 need to check corrected vision. Those over 40 years old do not need to check near visionA.1
Examine the external eye in anatomical order, and use a slit lamp to examine the cornea, anterior chamber, iris and lens. A. Use the 3-finger touch method to examine the fundus under pressure and without mydriasis, and pay attention to the retraction of the optic disc to exclude glaucoma. Then use 1-5% phenylephrine solution to fully dilate the pupil, use an ophthalmoscope to examine the optic stroma and fundus, and then use a slit lamp to examine the lens, record the characteristics of the lesions, and draw a diagram to illustrate. Additional Notes: www.bzxz.net
This standard was proposed by the National Health Standard Technical Committee and reviewed and approved by the Radiological Disease Diagnosis Standard Subcommittee. This standard was drafted by the Third Hospital of Beijing Medical University. This standard was interpreted by the Ministry of Health's Industrial Hygiene Laboratory, the technical unit entrusted by the Ministry of Health.
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