This study is a randomized controlled trial of a desk and chair adaptation intervention involving primary school students and their parents or primary caregivers. We compared the myopia status of students in the intervention and control groups before and after the intervention to confirm the effect of the desk and chair adaptation intervention on the development of myopia in students.
In this study, two pilot schools in Anhui Province were selected , and all students were examined by ophthalmologists, and their heights and the heights of their desks and chairs were measured in order to investigate the association between desk and chair adaptations and myopia. One of the elementary school was randomly selected for a one-year desk and chair adaptation intervention to compare the occurrence of myopia and axial growth of the students before and after the intervention in the two schools. Translated with DeepL.com (free version)
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
SINGLE
Enrollment
2,100
Adjustment of the height of tables and chairs to the height of each pupil in accordance with Functional sizes and technical requirements of chairs and tables for educational institutions (GB/T 3976--2014）, with a duration of intervention of one year。
The changes in axial length (AL) and spherical equivalent (SE) compared to baseline after one year of intervention
The ocular physiological parameters, including axial length (AL), horizontal and vertical corneal curvature (K1 and K2), were measured using an optical biometer (model IOL Master 700). Each eye was measured three times, and if the difference between any two measurements exceeded 0.05 mm, the process was repeated until the difference was less than this value.An objective examination method was used under non-cycloplegic conditions (i.e., without pupil dilation), utilizing a tabletop automatic refractometer (ISO 10342-2010 Ophthalmic Instruments - Refractometers). The spherical equivalent (SE) was calculated as follows: SE = sphere power + 1/2 cylinder power.
Time frame: at baseline, , and at the 12th month of the intervention.
The incidence of myopia.
The incidence of myopia is defined as the occurrence of myopia in children who were not myopic at baseline.
Time frame: at baseline, and at the 12th month of the intervention.
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