Myopia
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1.First-grade primary school students in the pre-myopia stage (age range: 6-7 years); 2.Both the student and their legal guardian agree to undergo cycloplegic refraction and follow-up examinations, and sign the project informed consent form.
Exclusion criteria
Exclusion criteria: 1.Individuals with allergies or contraindications to compound tropicamide eye drops or similar medications; 2.Those who are severely uncooperative during ophthalmic examinations and unable to maintain fixation for a certain period; 3.Individuals with organic ocular diseases or systemic diseases; 4.Individuals with a history of ocular trauma or ophthalmic surgery; 5.Individuals who have adopted myopia prevention and control measures other than eye exercises (e.g., acupuncture, massage, medication, auricular acupuncture, wearing myopia defocus glasses, or rigid gas-permeable contact lenses); 6.Individuals with a habit of wearing sunglasses outdoors for extended periods.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Axial Length;Spherical Equivalent;Incidence Rate of Myopia; | — |
Secondary
| Measure | Time frame |
|---|---|
| Uncorrected Visual Acuity;Axial Length Elongation;Spherical Rquivalent Refraction (SER) Change;Corneal Curvature Radius;AL/CR ratio; | — |
Countries
China
Contacts
Guangzhou Center for Disease Control and Prevention