The height of students' desks and chairs does not meet the standards, which has become a major factor in the current increase in the incidence of myopia among students. According to data surveys, most of the desks and chairs used by lower-grade students do not meet the national standards for desks and chairs.

According to the national hygiene standards for desks and chairs issued by the Ministry of Health, nine categories of students of different heights have been identified and should have corresponding height standards when using desks and chairs.

For example, if students are between 143 and 157 centimeters tall, the height of their desk should be 67 centimeters, the height of the space under the table should be 55 centimeters, and the height of the chair should be 38 centimeters.

In addition, the regulations also stated that although the styles of desks and chairs used in primary and secondary schools can be chosen at will, they must comply with national standards. But in reality, most desks and chairs do not meet the standards for use by students. In the investigation, a certain school equipped first-year students with desks with a height of 67.5 centimeters, an empty area under the desks with a height of 46.5 centimeters, and a chair height of 34.5 centimeters. This kind of desk and chair height combination means that the desk is high and the chair is low, which can easily lead to insufficient eye distance for primary school students, which is likely to cause students to suffer from myopia due to ultra-near vision.