ametropia
Conditions
Interventions
Group 1 :Single vision spectacle lens
Group 2:Wear free surface lens custom glasses
Group 3:Wear the defocus custom lens set
Sponsors
Tianjin Eye Hospital
Eligibility
Sex/Gender
All
Age
8 Years to 12 Years
Inclusion criteria
Inclusion criteria: 1. Age >= 8 years old and = 10 h/day) and sign an informed consent form.
Exclusion criteria
Exclusion criteria: 1. Patients with dominant strabismus; 2. Abnormal intraocular pressure (intraocular pressure 21 mmHg or bilateral intraocular pressure difference >= 5 mmHg); 3. Patients with other eye diseases, such as uveitis and other inflammations, glaucoma, cataracts, fundus diseases, eye tumors, eye trauma; and any eye diseases that affect visual function; 4. Previous history of eye surgery; 5. Those who have participated in drug clinical trials within three months, or/and have used any myopia control products, such as rigid contact lenses, multifocal contact lenses, progressive multifocal lenses and other specially designed myopia control lenses, atropine drugs, etc.; 6. Patients with low immunity caused by systemic diseases (such as acute and chronic sinusitis, diabetes, Down's syndrome, rheumatoid arthritis, mental illness or other diseases that researchers believe are not suitable for glasses, etc.; 7. There is a relevant family history of genetic eye diseases; 8. Only one eye meets the selection criteria; 9. Those who cannot have regular eye examinations; 10. Other circumstances that the investigator judges to be inappropriate to participate in the study.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| axial length;spherical equivalent; | — |
Countries
China
Contacts
Public ContactLihua Li
Tianjin Eye Hospital
Outcome results
None listed