Myopia
Conditions
Interventions
Control group:Spectacle lenses with highly aspherical lenslets (HAL)
Experimental group:Defocus enhanced lens (DEL)
Sponsors
Eye Hospital, Wenzhou Medical University
Eligibility
Sex/Gender
All
Age
6 Years to 9 Years
Inclusion criteria
Inclusion criteria: 1. Cycloplegic spherical equivalent +0.75 D(including) - -0.50 D(excluding)) : 6-9 years old, at least one parent is myopic -3.00 D or above; 2. Cylinder diopter < 1.00D; Binocular spherical equivalent anisometropia <=1.00D; 3. Monocular uncorrected visual acuity <= 0.1 LogMAR; 4. Voluntarily participate in the clinical trial and sign the informed consent;
Exclusion criteria
Exclusion criteria: 1. Received myopia intervention in the past 3 months, such as other specially designed myopia prevention and control frame lenses; Multifocal soft lens; Bifocal lens, gradient multifocal lens; Orthokeratology lenses; Low concentration atropine; Low intensity red light; 2. Active ocular surface inflammation, combined with other ocular diseases, such as uveitis and other inflammatory diseases, glaucoma, cataract, fundus disease, ocular tumors, ocular trauma, overt strabismus; And any eye diseases that affect visual function; 3. Immunocompromised patients with systemic diseases (such as diabetes, Down syndrome, rheumatoid arthritis, psychiatric patients or other diseases considered by researchers to be unsuitable for wearing glasses); 4. History of ocular trauma or intraocular surgery; 5. Failure to follow up regularly; 6. Had a disease that was deemed ineligible by other investigators.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Axial length;Cycloplegic autorefraction; | — |
Secondary
| Measure | Time frame |
|---|---|
| Visual comfort questionnaire; | — |
Countries
China
Contacts
Public ContactBao Jinhua
Eye Hospital, Wenzhou Medical University
Outcome results
None listed