The state stipulates that primary and secondary school students should have their eyesight checked several times a year.

The Guide to Appropriate Technologies for Prevention and Control of Myopia in Children and Adolescents proposes to establish a regular screening system for primary and secondary school students' eyesight and carry out poor eyesight examination, with the screening frequency not less than twice per academic year. The contents include naked eye vision, wearing glasses if you have them, and refractive examination without ciliary muscle paralysis, that is, computer optometry.

Vision test items:

Vision examination items include: hyperopia examination, myopia examination, red-green blindness examination, intraocular pressure examination, slit lamp examination, fundus fluorescein angiography examination, anterior chamber angle examination, optical coherence tomography examination, corneal focus microscope examination, etc.

Hyperopia and myopia can check whether there is ametropia. Red-green color blindness test can judge whether there is color blindness. Intraocular pressure examination can determine whether the intraocular pressure has increased or decreased.

Slit lamp examination can determine whether the eyes are everted or everted and whether the cornea is transparent and smooth.

The harm of myopia:

1, blurred vision: Myopia may be due to overuse of eyes or genetic factors, which affect the visual quality, resulting in the inability to see things in the distance clearly. If necessary, it can be improved by wearing frame glasses, which can improve vision.

2. Inducing eye diseases: If myopia is high and corresponding treatment measures are not taken in time, various eye diseases, such as cataract and glaucoma, may be caused.