Myopia
Conditions
Keywords
Myopia control
Brief summary
China is a major country in myopia, with the highest number of teenagers suffering from myopia. Controlling the progression of myopia and the related complications caused by axial elongation have clinical significance and social value. Currently. There is a lack of researches on the impact of specially designed myopia control spectacle lens in adolescents aged 12 and above. Therefore, The researchers plan to conduct a randomized controlled trial among myopia adolescents aged 12-17 in middle and high schools in Guangzhou, to test and verify the safety and effectiveness of CARE1.02 on myopia control compared with single-vision spectacle lens.
Interventions
DEVICECARE1.02
Participants in the intervention group will wear CARE1.02 and receive the follow-up checks.
Participants in the control group will wear single-vision spectacle lens and receive the follow-up checks.
Sponsors
Zhongshan Ophthalmic Center, Sun Yat-sen University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
DOUBLE (Caregiver, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
12 Years to 17 Years
Healthy volunteers
No
Inclusion criteria
* Aged 12 to 17 years; * Under the condition of bilateral cycloplegic autorefraction, the spherical refractive error of -0.50 to -8.00 D in each eye and astigmatism of not more than 1.50 D and anisometropia of not more than 1.50 D; * Best-corrected visual acuity of equal or better than 0.00 LogMAR (\>= 1.0 as Snellen). * The intraocular pressure of 10 to 21mmHg. * Volunteer to participate in this clinical trial with signature of the informed consent form.
Exclusion criteria
* History of eye injury or intraocular surgery; * Clinically abnormal slit-lamp findings; * Abnormal fundus examination; * Ocular disease, such as uveitis and other inflammatory diseases,glaucoma, cataract, fundus diseases, eye tumors, dominant strabismus, and any eye diseases that affect visual function; * Systemic diseases causing low immunity (such as diabetes, Down's syndrome, rheumatoid arthritis, psychotic patients or other diseases that researchers think are not suitable for wearing glasses); * Participation of the drug clinical trial within three month and the device clinical trial within one month; * Only one eye meets the inclusion criteria; * Unable to have regular follow-up; * Participation of any myopia control clinical research trial within three months, and currently using rigid contact lenses (including nursing products), multifocal contact lenses, progressive multifocal lenses and other specially designed myopia control lenses, atropine drugs, etc.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Changes of spherical equivalent refraction (SER) at one year | 1 year | The difference of SER at one year from baseline. SER will be measured after cycloplegia |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Best corrected visual acuity at one year | 1 year | Best corrected visual acuity |
| Binocular visual function at one year | 1 year | Binocular visual function |
| Choroidal thickness at one year | 1 year | The difference of Choroidal thickness at one year from baseline. |
| Visual scale score at 1 year | 1 year | Visual scale score measured by the Chinese version of the pediatric refractive error profile2 (PREP2) |
| Changes of axial length (AL) at one year | 1 year | The difference of AL at one year from baseline. |
| Change of anterior chamber depth (ACD) at one year | 1 year | The difference of ACD at one year from baseline. |
| Change of lens thickness (LT) at one year | 1 year | The difference of LT at one year from baseline. |
| Change of corneal curvature (CR) at one year | 1 year | The difference of CR at one year from baseline. |
| Time length of wearing spectcales at one year | 1 year | Time length of wearing spectcales collected every half year |
| Safty of wearing the spectacle lens | 1 year | Safty of wearing the spectacle lens which is a qualitative outcome will be evaluated every half year by prespecified measures and definations through symptoms and signs, intraocular pressure#slit lamp and ocular fundus checks. |
Countries
China
Outcome results
None listed