myopia
Conditions
Interventions
Group 1:Aspherical base curve designed orthokeratology
Group 2:Spherical base curve designed orthokeratology
Sponsors
West China hospital, Sichuan University
Eligibility
Sex/Gender
All
Age
8 Years to 12 Years
Inclusion criteria
Inclusion criteria: (1) Age between 8 and 12 years old; (2) The best corrected ETDRS visual acuity in a single eye is >= 20/25; (3) Diopters of sphere between -0.75~-4.00D; (4) Corneal astigmatism <= 1.50D, axis at 180±30, subjective refraction astigmatism <= 1.00D; (5) Anisometropia <= 1.00D; (6) Except for conventional glasses, no other methods of myopia control, no history of wearing contact lenses; (7) At the beginning of the trial, follow-up visits to West China Hospital according to the trial design arrangement until the lens wearing time reaches 12 months; (8) Sleep more than 8 hours per night, wear at least 6 nights per week; (9) The refractive medium of the examined eye is clear; (10) The examined eye has no nystagmus and has good fixation ability.
Exclusion criteria
Exclusion criteria: (1) Narrow anterior chamber or intraocular pressure> 21mmHg; (2) Suffering from keratitis, keratoconus, glaucoma, strabismus and amblyopia; (3) Suffering from mental illness; (4) The history of wearing contact lenses; (5) Cardiopulmonary insufficiency; (6) Severe eye discomfort; (7) Accommodative insufficiency; (8) Poor compliance, and the researcher thinks it is inappropriate to continue participating in this trial; (9) Subjects require to quit.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| axial length;corneal endothelial;tear break-up time;visual acuity;relative peripheral refraction;subfoveal choroidal thickness;aberration;corneal thickness;ocular surface disease index,;tear meniscus height;Schirmer?test;subjective refraction;objective refraction; | — |
Countries
China
Contacts
Public ContactWei Ma
West China Hospital, Sichuan University
Outcome results
None listed