myopia
Conditions
Interventions
Group 1:single vision spectacle lenses
Group 2:placebo
Group 3:orthokeratology
Sponsors
Shandong Eye Instiute, Qingdao Eye Hospital
Eligibility
Sex/Gender
All
Age
3 Years to 18 Years
Inclusion criteria
Inclusion criteria: 1. The spherical diopter of the patient is -0.50D~-6.00D and the cylinder diopter is less than -1.00D after mydriasis and optometry; 2. The patient's age is between 6 and 18 years old; 3. The patient's best corrected visual acuity is 1.0 or above; 4. Patients need to voluntarily sign the informed consent; 5. Patients should be able and willing to follow up on time during the study period.
Exclusion criteria
Exclusion criteria: 1. The patient has underlying, recurrent or progressive corneal disease and corneal abnormalities (especially recurrent corneal erosion, severe stromal disease, keratoconus, and hyaline marginal keratosis); 2. The patient has irregular corneal morphology in one or both eyes; 3. The patient is taking some systemic drugs that may affect the refraction, such as adrenocortical hormones and antimetabolites; 4. The patient is immunocompromised or has connective tissue disease, dominant genetic disease or diabetes; 5. The patient has a history of eye surgery; 6. The patient's central corneal curvature is irregular; 7. The patient is allergic to the drugs used in the study; 8. The patient has a history of glaucoma or suspected glaucoma; 9. The patient participates in other trials during the trial; 10. The patient has a history of herpetic keratitis; 11. The patient uses local or systemic drugs to control the progression of myopia; 12. The patient suffers from nystagmus or is unable to fixate for long periods of time during surgery.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| axial length;subjective refraction;Peripheral retinal defocus;Biomechanics;aberration; | — |
Countries
China
Contacts
Public ContactLeng Lin
Shandong Eye Instiute, Qingdao Eye Hospital
Outcome results
None listed