myopia
Conditions
Interventions
Group 1:Wear orthokeratology lens
Group 2:Wear spectacles
Sponsors
Yongchuan Hosipital of Chongqing Medical University
Eligibility
Sex/Gender
All
Age
8 Years to 12 Years
Inclusion criteria
Inclusion criteria: 1.Aged 8-12 years old ; 2.-4.75D = SE = -0.75D, best corrected visual acuity ( BCVA ) = 1.0 ; 3.the absolute value of binocular astigmatism = 1.50D ; 4.anisometropia of both eyes after equivalent spherical lens = 1.00D ; 5.IOP < 21mmHg.
Exclusion criteria
Exclusion criteria: 1.History of eye surgery ; 2.have a history of myopia control treatment ( such as soft or hard contact lenses, bifocal or multifocal glasses, atropine eye drops ) ; 3.strabismus or amblyopia ; 4.there are systemic diseases that may affect refractive development ( such as Down 's syndrome, Marfan 's syndrome ) or eye diseases that affect ocular refractive errors ( such as cataracts, ptosis ) ; 5.contraindications for wearing contact lenses : active corneal infection, or other acute or chronic inflammation of the anterior segment ; 6.have a family history of high myopia ; 7.unable to fixate on the target, unable to obtain a clear choroidal image.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| axial length;choroidal thickness; | — |
Secondary
| Measure | Time frame |
|---|---|
| diopter;choroidal blood flow ;Retinal peripheral defocus;central corneal thickness;anterior chamber depth ;lens thickness; | — |
Countries
China
Contacts
Public ContactLi Hua
Yongchuan Hosipital of Chongqing Medical University
Outcome results
None listed