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.
Students and their families were informed and voluntarily participated in the study, with parents signing the informed consent form.
Able to cooperate with eye examinations and questionnaires.
Communication barriers, unable to cooperate.
Strabismus, amblyopia, or any other ocular or systemic diseases that may affect refractive development.
Children currently using orthokeratology lenses or rigid contact lenses.
Using other interventions (such as acupuncture, massage, medication, ear acupuncture, etc.) to control myopia, apart from school eye exercises.
Parallel
Desk and chair adaptation interventions
DeviceAdjustment 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.
The incidence of myopia.
The incidence of myopia is defined as the occurrence of myopia in children who were not myopic at baseline.
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Fangbiao Tao
Lead sponsor
Anhui Medical University
Sponsor institution
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