Myopia
Conditions
Interventions
Single-Focus Group:Single-focus lenses
Multi-Focal Group:multi-focal lenses
Novel Dual-Effect Group:novel dual-effect lenses
Sponsors
Yantai Yuhuangding Hospital
Eligibility
Sex/Gender
All
Age
7 Years to 15 Years
Inclusion criteria
Inclusion criteria: 1. Children and adolescents aged 7 to 15 years (including both age limits). 2. Children and adolescents who have not previously received any myopia correction or treatment and are receiving their first pair of corrective lenses. 3. After cycloplegia, computerized refraction shows bilateral equivalent spherical power: -6.00D = -2.00D. 5. Best-corrected visual acuity in both eyes >= 1.0. 6. Binocular refractive error (equivalent spherical difference) <= 2.00D. 7. Normal ocular examination findings and normal intraocular pressure.
Exclusion criteria
Exclusion criteria: 1. Potential ocular diseases affecting vision or refractive errors (e.g., corneal disorders, cataracts, glaucoma, macular degeneration). 2. Anisometropia (difference in equivalent spherical power between eyes) >2.00D, strabismus, amblyopia. 3. Any pathological ocular changes or systemic diseases. 4. Prior use of myopia control treatments such as atropine, orthokeratology lenses, multifocal soft lenses, multifocal rigid lenses, or functional spectacles. 5. Other reasons deemed ineligible for inclusion by the investigator.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| spherical equivalent refraction after ciliary muscle paralysis(SER);axial length(AL); | — |
Secondary
| Measure | Time frame |
|---|---|
| distance lateral phoria(DLP);best corrected visual acuity(BCVA);uncorrected visual acuity(UCVA);negative relative accommodation(NRA);binocular cross-cylinder(BCC);accommodative facility(AF);near lateral phoria(NLP);positive relative accommodation(PRA);negative fusion vergence(NFV);keratometry(K);contrast sensitivity(CS);subfoveal choroidal thickness(SFCT);positive fusion vergence(PFV);amplitude of accommodation(AMP);stereoacuity; | — |
Countries
China
Contacts
Public ContactZhang Fenglan
Yantai Yuhuangding Hospital
Outcome results
None listed