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WS/T 663-2020: Specification for screening of refractive error in primary and secondary school students
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Specification for screening of refractive error in primary and secondary school students
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WS/T 663-2020
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Basic data | Standard ID | WS/T 663-2020 (WS/T663-2020) | | Description (Translated English) | Specification for screening of refractive error in primary and secondary school students | | Sector / Industry | Health Industry Standard (Recommended) | | Classification of Chinese Standard | C56 | | Word Count Estimation | 7,711 | | Date of Issue | 2020-01-11 | | Date of Implementation | 2020-06-01 | | Regulation (derived from) | State-health communication (2020) No. 1 | | Issuing agency(ies) | National Health Commission | WS/T 663-2020: Specification for screening of refractive error in primary and secondary school students
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Specification for screening of refractive error in primary and secondary school students
ICS 13.100
C 56
WS
People's Republic of China Health Industry Standard
Standards for screening of refractive errors in elementary and middle school students
2020-01-11 released
2020-06-01 Implementation
Issued by the National Health Commission of the People's Republic of China
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
Drafting organizations of this standard. Shanghai Eye Disease Prevention Center, Peking University Institute of Child and Adolescent Health, First Affiliated to Shanghai Jiaotong University
People's Hospital.
The main drafters of this standard. Zou Haidong, He Xiangui, Ma Yingyan, Ma Jun, Dong Bin, Xu Xun.
Standards for screening of refractive errors in elementary and middle school students
1 Scope
This standard specifies the basic requirements, screening methods, referral recommendations and post-screening requirements for the screening of refractive errors for primary and secondary school students.
This standard applies to hospitals, disease prevention and control centers, community health service centers, and township health centers that carry out screening of refractive errors for primary and secondary school students.
Birth hospitals, maternity and child health centers, and primary and secondary school health care institutions.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document.
For undated references, the latest version (including all amendments) applies to this document.
GB/T 11533 standard logarithmic eye chart
GB/T 26343 Technical Specification for Student Health Check
ISO 10342 Ophthalmic instruments-Eye refractometers
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Refractive error
When the eye is stationary, the parallel light cannot be focused on the retina after entering the human eye.
Note. Refractive errors include. hypermetropia (hypermetropia), myopia (myopia) and astigmatism (astigmatism).
3.2
Screening of refractive error
Use quick and simple methods such as visual inspection, refractive measurement under non-cycloplegia, etc., to identify people who may have refractive errors in the crowd
Distinguish from people who don't have refractive errors.
3.3
Diopter of spherical power
The lens power to make the paraxial parallel light converge at one point.
3.4
Diopter of cylinder power
In order to make the paraxial parallel light beams converge on two separate, mutually orthogonal intersection lines, there are two lens powers with main vertex power.
3.5
Spherical equivalent; SE
The spherical power plus 1/2 cylinder power.
4 Basic requirements
4.1 Screening agency
Screening agencies include hospitals, disease prevention and control centers, community health service centers, township health centers, maternal and child health centers, and primary and secondary school health centers.
Health care institutions have screening personnel who meet the requirements of 4.2.
4.2 Screeners
Screening personnel should be those who hold national qualification certificates for doctors, technicians, and nurses related to ophthalmology. Professionals with relevant standardized training
Industry technicians can assist in the work.
4.3 Screening sites
4.3.1 The screening site should be clean, tidy, and quiet.
4.3.2 The size and light intensity of the screening site should meet the inspection distance and lighting requirements for the use of eye chart in GB/T 11533.
4.3.3 The temperature and humidity of the screening site should meet the requirements of the refractor for the working environment.
4.4 Screening equipment
4.4.1 Refractive test should use a refractometer that meets the requirements of ISO 10342, and cross-lens can be used in areas where there is no refractometer.
4.4.2 The vision checklist should meet the requirements of GB/T 11533.
4.4.3 The instruments and equipment used for screening should be approved and tested by relevant departments, and they should be regularly subject to metrological verification and calibration.
4.5 Screening time and frequency
The same school is screened at the same time period every year, and the screening frequency is not less than once every school year. Areas with conditions can increase the frequency of screening.
5 Screening methods and referral recommendations
5.1 Screening methods
5.1.1 Naked eye distance vision examination
5.1.1.1 The naked eye distance visual acuity adopts the measured value, and the inspection method is in accordance with the provisions of GB/T 11533 and GB/T 26343.
5.1.1.2 Before the examination, ask the subject whether he wears frame glasses or contact lenses (including hard and soft lenses). Such as wearing frame
Wear glasses or contact lenses, and after writing on the "Refractive Error Screening Results Record Form", remove the glasses or cornea
Contact lens to check naked eyesight. "Refractive Error Screening Results Record Form" see Appendix A.
5.1.1.3 During the inspection, the screener reminds the subject that the subject shall not squint, peek, rub his eyes, squint, lean forward, or accept prompts from others.
5.1.1.4 The 5-point recording method is adopted for the visual inspection record.
5.1.2 Wear glasses for distance vision examination
For subjects who wear glasses or contact lenses (including hard and soft lenses) on a daily basis, the distance vision with glasses should also be checked.
The method is in accordance with 5.1.1.1, 5.1.1.3 and 5.1.1.4.The visual acuity of those who wear orthokeratology at night is recorded as visual acuity with glasses.
5.1.3 Refractive test
5.1.3.1 The refractive test is performed with a refractor under non-ciliary muscle paralysis. Before daily screening, use standard analog eye
Correction and adjust the cylinder value to a negative state. Each eye of the subject is measured 3 times, and the average value is taken; such as any 2 times of spherical lens
If the difference between the measured value of the degree is greater than or equal to 0.50 D, the number of measurements should be increased, and then the average value should be taken. The average value is rounded to two decimal places.
The results with large fluctuations in multiple tests should be recorded in the record sheet. Refractive testing uses actual measured values and should not be obtained by means of questionnaires, self-reports, etc.
5.1.3.2 In areas where the refractor cannot be used for testing, the refractive test can be performed with a string lens under non-ciliary muscle paralysis.
The inspection method of the string mirror is in accordance with the provisions of GB/T 26343.
5.1.3.3 Those who wear spectacles with frames will take off the spectacles before performing a refractive test, and those who wear contact lenses will take off the spectacles 30
Refractive detection is performed above min. Those who wear orthokeratology at night may not undergo refractive testing.
5.1.3.4 The abnormal situation found during inspection shall be explained by text.
5.1.4 Identification of major eye diseases
5.1.4.1 When SE< ﹣0.5 D and naked eye distance visual acuity< 5.0, the screening result is judged to be myopia.
5.1.4.2 The result of the cross-mirror detection shall be determined in accordance with GB/T 26343.
5.1.4.3 During the screening process, the screening personnel shall actively identify the hyperopia, astigmatism and other eye diseases of primary and secondary school students, and
Refer to a medical institution with a valid medical institution practice license for follow-up consultation.
5.1.5 Records of screening results
Screeners should promptly record the screening results in the "Refractive Error Screening Results Record Form".
5.2 Referral recommendations
5.2.1 The screening results do not have diagnostic significance, and should go to a medical institution with a valid medical institution license for further examination to confirm the diagnosis.
5.2.2 Screening should be performed with uncorrected distance vision, distance vision with glasses, and optometry under non-cycloplegia conditions. Referral recommendations after screening should be in accordance with Appendix B.
6 Requirements after screening
6.1 The screening agency should promptly feed back the results of the examination to the students and their parents, and provide referral recommendations in accordance with the requirements of Appendix B.
6.2 Screening agencies should sort out and save relevant information in a timely manner, establish or update student vision health files, and ensure the safety of student information. Have
It is advisable to establish electronic vision health records in areas where conditions permit.
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