ametropia
Conditions
Interventions
Experimental group:Wear lens A (BC 5mm) for both eyes, elute for 1 month after half a year, and then wear lens B (BC 6.2mm)
Control group:Wear lens B (BC 6.2mm) for both eyes, elute for 1 month after half a year, and then wear lens A (BC 5mm)
Sponsors
The Eye Hospital of Wenzhou Medical University
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1. 8 years = age < 12 years; 2. Subjective optometry equivalent spherical mirror (SE) - 1.00D to - 5.00D, astigmatism = -1.50D, SE anisometropia = 1.00D; 3. Best corrected vision = 1.0; 4. Intraocular pressure of both eyes = 21mmHg; 5. Those who fully understand the purpose of clinical research, sign the informed consent form with their guardian, and can check and follow up as required.
Exclusion criteria
Exclusion criteria: 1. Single eye meets the inclusion criteria; 2. Acute, subacute or chronic inflammation and infection of anterior segment; 3. Having eye diseases, injuries or structural abnormalities that may affect the cornea, conjunctiva or eyelid, such as dacryocystitis, acute conjunctivitis, blepharitis and other inflammation, xerophthalmia, glaucoma, etc., resulting in the inability to fit the corneal contact lens; 4. Patients with dominant strabismus; 5. Those who suffer from systemic or eye damage or other diseases that affect visual development, resulting in inability to wear contact lenses safely (such as diabetes, Down's syndrome, etc.), and have acute or chronic sinusitis within 2 years; 6. Have eye or systemic diseases that may be related to the development of myopia or affect the refractive status of the eye, such as Marfan's syndrome, retinopathy of premature infants, etc; 7. At the time of enrollment or during the test, any systemic or local drugs that may affect the results of ophthalmic examination, known to affect the eye health/normal physiological function or the normal wearing effect of contact lenses are being or need to be used; 8. Previous history of corneal refractive surgery, corneal trauma and corneal surgery; 9. keratoconus or suspected keratoconus; 10. Those who have received optical or drug myopia prevention and control treatment, such as OK lens, multifocal soft lens, atropine, peripheral defocus design frame glasses, etc; 11. Those who are allergic to contact lens or contact lens care system; 12. Those who cannot understand the limitations of treatment methods; 13. The sensitivity is too high or the expectation is too high; 14. The investigator judged that the patient was not suitable for other conditions.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Axial lengths; | — |
Secondary
| Measure | Time frame |
|---|---|
| uncorrected visual acuity;Computer optometry equivalent spherical under ciliary muscle paralysis; | — |
Countries
China
Contacts
Public ContactJun Jiang
The Eye Hospital of Wenzhou Medical University
Outcome results
None listed