Myopia
Conditions
Interventions
Group 2:Use routine single lens as control
Group 1:Gradually focal lens
Sponsors
Zhongshan Ophthalmic Center
Eligibility
Sex/Gender
All
Age
7 Years to 18 Years
Inclusion criteria
Inclusion criteria: Computer optometry after cycloplegia, binocular myopia, the spherical equivalent degree between -0.75~ -3.00D, astigmatism degree less than -1.50 D, binocular anisometropic degree less than 1.00D; Bilateral corrected visual acuity more than 1.0; Normal intraocular pressure: binocular intraocular pressure less than 21mmHg, and the difference less than 2mmHg; No history of wearing contact lenses, bifocal or multifocal lenses; Term infants, birth-weight more than 1250g; Agree to wear the lenses and follow up more than 2 years; Understand the study objective and accept the randomized allocation.
Exclusion criteria
Exclusion criteria: Manifest strabismus or other ophthalmopathy; Systematic diseases; Use of drugs that may influence the refractive status; Myopia degree of either parent more than 3D; Use of contact lenses or other myopia-treatment methods in the study.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Myopic degree;Eyeball bio-test; | — |
Countries
China
Contacts
Public ContactZhikuan Yang
Outcome results
None listed