Myopia
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Aged 8-12 years old. 2. The equivalent spherical power range of one eye is from -0.50D to -4.00D. The equivalent spherical power range of the other eye is from +0.75D to -0.25D and the naked visual acuity is no less than 20/20. 3. Regular astigmatism <=0.75D. Anisometropia is no less than 1.00D. 4. The best corrected visual acuity in both eyes is no less than 20/20.
Exclusion criteria
Exclusion criteria: 1. There is strabismus. 2. There are contraindications for wearing orthokeratology lenses. 3. Have other eye diseases or history of ocular surgery. 4. Have undergone any myopia prevention and control treatments. 5. Those who cannot cooperate with the examinations.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| ocular axial length;refractive power; | — |
Secondary
| Measure | Time frame |
|---|---|
| amplitude of accommodation;near point of convergence;accommodative response and accommodative lag;accommodative facility;convergence facility;stereo acuity;the balance point measure of ocular dominance;choroid thickness;choroidal blood flow;peripheral Refraction;corneal curvatures;near phoria; | — |
Countries
China