Myopia
Conditions
Interventions
Group A:Peripheral Diffractive Lenses
Group B:Contrast Reduction Lenses
Group C :Combined Signal Lenses
Sponsors
Eye Hospital, Wenzhou Medical University
Eligibility
Sex/Gender
All
Age
6 Years to 14 Years
Inclusion criteria
Inclusion criteria: 1. Myopia degree: 0.00 - -10.00D; astigmatism degree: = 4.9; 3. The patients are aged between 6 and 14 years old, and there is no restriction on gender. 4. Be able to complete at least 24 months of follow-up. 5. Being able to understand the purpose of the experiment, voluntarily participating, and having the informed consent form signed by the subject himself/herself and his/her legal guardian.
Exclusion criteria
Exclusion criteria: 1. History of surgeries that affect eye development; 2. Intraocular pressure > 21 mmHg; 3. Patients with manifest strabismus and amblyopia have significantly abnormal binocular accommodation function. 4. Any single eye with the best corrected visual acuity (VA) less than 4.9; 5. Eye diseases (excluding refractive errors) and systemic diseases of the whole body; 6. Wore myopia prevention lenses, defocus soft lenses, or used low-concentration atropine eye drops within one month; 7. Worn OK lenses or other methods for correcting myopia within the past 3 months (such as red light-related treatment methods); 8. History of systemic medication (drugs that affect growth and development, such as growth hormone); 9. Currently participating in any clinical research trials for myopia control; 10. Other circumstances that the researchers consider unsuitable for participating in the trial.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| change in axial length during 12 months; | — |
Secondary
| Measure | Time frame |
|---|---|
| Contrast sensitivity;change in refraction;Axial length of the eye;Choroidal thickness;Genetic testing; | — |
Countries
China
Contacts
Public ContactChen Ruru
Eye Hospital, Wenzhou Medical University
Outcome results
None listed