Myopia, Progressive
Conditions
Keywords
myopia, axial length, defocus
Brief summary
To confirm the efficacy of DIMS lenses in controlling myopia progression, we planned a prospective, single-centre, randomised, double-blind, controlled, non-inferiority clinical study.
Detailed description
Prior to the trial, subjects signed an informed consent form, screened and qualified subjects were enrolled, and subjects received framed spectacles for correction of myopic refractive error in both eyes, and were fitted with framed spectacles by the investigator according to the standard fitting procedure specified in this protocol. Subjects were randomized to Trial Group A (strong high order aberration group) and Trial Group B (medium high order aberration group) and Control Group (HOYA MiYOSMART). The index of effectiveness in this clinical trial was to assess the effectiveness of the test group of lenses in slowing the rate of myopia progression by examining the subject's objective optometric values after ciliary muscle paralysis. The basic examination of this clinical trial included slit lamp examination, eye axis examination, fundus examination, corneal topography, best-corrected visual acuity, binocular visual function, refractive status and best-corrected visual acuity after ciliary muscle paralysis, and intraocular pressure measurements, etc. The spectacle fitting was also recorded, as well as the subjective feeling of the subjects when wearing the lenses. Each subject was followed up for 12 months, and the efficacy and safety of the test product for delaying the progression of myopia was evaluated by the investigator at 1 week ± 1 day (telephone follow-up), 1 month ± 15 days (telephone follow-up), 3 months ± 15 days, 6 months ± 15 days, and 12 months ± 30 days after wearing the lenses. During the course of this clinical trial, the lenses were replaced due to loss, breakage, change in refraction or poor vision with the lenses, etc., after evaluation by the investigator, and the changes were recorded.
Interventions
DEVICEframe lens
A randomized block group design was used to randomly assign the included study subjects. The appropriate randomization number and random allocation scheme will be given after enrollment.
Sponsors
Tianjin Eye Hospital
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
DOUBLE (Subject, Investigator)
Eligibility
Sex/Gender
ALL
Age
8 Years to 13 Years
Healthy volunteers
Yes
Inclusion criteria
* The subjects had spherical RE of -1.00 to -6.00 D, astigmatism ≤ 1.50 D, anisometropia ≤ 1.50 D * the best corrected visual acuity in the left and right eyes subjective optometry is greater than or equal to 1.0
Exclusion criteria
* Candidate subjects were excluded from the study if they had strabismus, ocular limitations, or systemic abnormalities affecting vision and ocular motility
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Cycloplegic objective refraction | 12 months | Cycloplegic objective refraction was measured with an autorefractor (Topcon KR8900, Japan) |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Axial Length | 12 months | Axial length (AL) was measured with an AL-Scan optical biometer (Nidek, Japan) |
Countries
China
Contacts
Primary ContactXiaoqin Chen, MD
Outcome results
None listed