Myopia
Conditions
Interventions
Intervention group:Peripheral defocus spectacle lenses
Control group:Single-vision spectacle lenses
Sponsors
West China Hospital, Sichuan University
Eligibility
Sex/Gender
All
Age
6 Years to 16 Years
Inclusion criteria
Inclusion criteria: 1. Aged 6-16 years; 2. Refractive errors: cycloplegic manifest ocular refraction in either eye; spherical equivalent refraction >= -7.00D and = -1.50D; astigmatism = 1.0; 4. Available for scheduled visits at the West China Hospital, Sichuan University;
Exclusion criteria
Exclusion criteria: 1. Suffering from keratitis, conjunctivitis, acute inflammation around the eye, glaucoma, strabismus, nystagmus and other eye diseases; 2. Have worn other myopia control methods (such as orthokeratology , multifocal soft contact lens, etc.); 3. Participants who have participated in clinical studies on the prevention of myopia progression; 4. Suffering from mental illness; 5. Patients with systemic diseases, such as cardiopulmonary insufficiency, diabetes, hypertension, etc; 6. Patients with poor compliance and considered unsuitable to continue to participate in the clinical trial.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Subjective refraction;Axial length;Objective refraction; | — |
Secondary
| Measure | Time frame |
|---|---|
| Slit-lamp examination;Fundus camera;Intraocular pressure;Binocular basic measurement;Visual acuity;Optical coherence tomography;Contrast sensitivity test;Questionnaire; | — |
Countries
China
Contacts
Public ContactLiu Longqian
West China Hospital, Sichuan University
Outcome results
None listed