Eye-use behaviors intervention to control axial growth in children based on Eye-Monitor technology:a pragmatic cluster randomized controlled study

INTERVENTION: Control group:None;Intervention group:Intervention group conducts health behavior management intervention through home‐school‐doctor information linkage: text message reminders, individual rewards, collective incentives, praise incentives, personalized eye‐use behavior report feedback.; CONDITION: Myopia PRIMARY OUTCOME: The changes in axial length ; SECONDARY OUTCOME: Viewing distance;Mean duration of sustained near work; INCLUSION CRITERIA: 1. Aged 6 to 12 years old; 2. Best corrected visual acuity >=1.0; 3.Anisometropia <=1.50 D; 4.Astigmatism<=1.50 D; 5.Obtain informed consent and voluntarily sign the informed consent form.