About this trial
This study is for testing the efficacy and safety of distance-image screens for preventing myopia in children for 12 month. Each subjects would be asked to paired test the ocular parameters between before and after 12-month distance-image screens.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
(1) Must be 6~12 years old;
(2) Must be best corrected visual acuity < logMAR: 0.1;
(3) Spherical Equivalence (SE) must be -1.00~ + 6.00 Diopter (D),
(4) Spherical Equivalence (SE) must have changed > 1.25 Diopter (D) in the recent 2 years;
Disqualifiers
(1) Strabismus disease;
(2) Amblyopia disease;
(3) Cataract disease;
(4) Glaucoma disease;
Trial design
Single group
Treatments tested in this trial
distance-image screen
DeviceDistance-image screen is a screen make each image at distance of 6-meters to reduce the accommodation and convergence for eyes during the reading and learning with screens.
Treatment groups
Trial outcomes
Primary outcomes
Changes of ocular axial length (mm)
IntraOcularLens (IOL) master biometry will exam each eye before the testing and after the testing with distance-image screen
Changes of refractive error (D)
Cycloplegic refraction with autorefractor will test each eye before the testing and after the testing with distance-image screen
Secondary outcomes
Changes of center macular thickness (um)
Optic Coherent Topograph (OCT) of macular fovea central thickness will be made to compare the thickness before and after using distance-image screen
Changes of subretina choroidal thickness (um)
Optic Coherent Topograph (OCT) with Enhanced Depth Imaging (EDI) scan of macular fovea central thickness will be done to compare the thickness before and after using distance-image screen
Changes of other regions choroidal thickness (um)
Optic Coherent Topograph (OCT) with Enhanced Depth Imaging (EDI) scan of other regions choroidal thickness will be done to compare the thickness before and after using distance-image screen
Sponsors and contacts
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