A Real-world Study of 650nm Low-intensity Single-wavelength Red Light for Children and Adolescents

Myopia Clinical Trial

Official title:

A Real-world Study to Evaluate the Efficacy of 650nm Low-intensity Single-wavelength Red Light in the Prevention and Control of Myopia in Children and Adolescents

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT05832723
• Other study ID #: TongrenJY2023
• Status: Recruiting
• Start date: April 15, 2023
• Est. completion date: March 28, 2026

Study information

• Verified date: July 2023
• Source: Beijing Tongren Hospital
• Contact: Kai Cao
• Phone: 01058265900
• Email: caozhi[@]ccmu.edu.cn
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

To evaluate the efficacy and safety of 650nm low-level red-light irradiation for myopia control and prevention in children under less restrictive conditions than randomized controlled trials. Participants included children(aged 7 to 18 years, spherical equivalent error of 0.5D or below) who are already myopic at recruitment, and those who are of Emmetropia or low hyperopia.

Description:

This multicenter real world study will be conducted in at least 100 hospitals: Beijing Tongren Hospital will be the initiator of the study, other hospitals such as the Capital Institute of Pediatrics will serve as sub-centers. The whole study will last for three years.The investigators will perform data analysis at 6 months follow-up, one-year follow-up, and two-year follow-up. Participants who used 650 nm low-level red-light would be recruited. This kind of intervention will be integrated into a headworn device. This device could be used for treatment of myopia or amblyopia, and is safe for the eyes and has been verified by the Chinese market supervision and administration department.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 2000
• Est. completion date: March 28, 2026
• Est. primary completion date: March 28, 2026
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 7 Years to 18 Years

Eligibility

Inclusion Criteria:

1. Children aged 7 to 18 years

2. The cycloplegic spherical equivalent error (SER) is +0.5D or less in both eyes

3. Astigmatism of 2.5 D or less (=2.5D)

4. Willing to participate in the study and sign the informed consent form

Exclusion Criteria:

1. Including but not limited to the following eye diseases: strabismus, amblyopia, ocular tumors, glaucoma/macular disease and other fundus diseases (including heredity), keratitis, eye trauma, uveitis

2. Including but not limited to the following systemic diseases: epilepsy, tumor, heart disease, asthma, systemic immune diseases, infectious diseases

3. Mental diseases

4. Similar interventions have been used in the past year

5. Allergic to cycloplegic agents or to red light

6. The 650nm red light intervention was not suitable for the condition evaluated by the researchers

7. are currently using atropine or similar drugs, or have stopped using them for less than 1 month

Related Conditions & MeSH terms

• Myopia

Intervention

Device:
• 650 nm low-level red-light
Typically, children who uses the 650 nm low-level red-light will be recruited into this study. The use of any other myopia intervention is not restricted except for low concentrations of atropine. Because atropine will cause pupils dilated, the amount of light entering the eye can not be controlled, and red-light is a laser, to be safe, we need to take certain consideration of the amount of light-entering. Participants receive the 650 nm low-level red-light intervention not because they are enrolled in a study, they would receive the intervention in the same manner and intensity if they were not enrolled in the study.

Locations

Country	Name	City	State
China	Red light	Beijing	Beijing

Sponsors (1)

Lead Sponsor	Collaborator
Beijing Tongren Hospital

Country where clinical trial is conducted

China, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Other	Fundus injury related to 650 nm low-level red-light irridiationexamination	Any potential fundus injury related to 650 nm low-level red-light irridiation would be checked through Fundus photography and coherence tomography examination	Baseline, six-month follow-up, one-year follow-up, two-year follow-up
Primary	Change in axial length	Use an optical biometer to measure the axial length	Baseline, six-month follow-up, one-year follow-up, two-year follow-up
Primary	Change in spherical equivalent error	Children's pupil were dilated using Mydrin-P eye drops, and then the refractive error was measured using an autorefractor. the two measurements (axial length and spherical equivalent error) will be aggregated to arrive at one reported value through the following way: axial enlongation will be defined as progress in myopia, decrease in spherical equivalent error will be defined as progress in myopia too.	Baseline, six-month follow-up, one-year follow-up, two-year follow-up
Secondary	Change in Choroid thickness to measure	Use an enhanced-depth imaging technique (based on Optical coherence tomography )	Baseline, six-month follow-up, one-year follow-up, two-year follow-up
Secondary	Change in steep keratometry	Use an optical biometer to measure	Baseline, six-month follow-up, one-year follow-up, two-year follow-up
Secondary	Change in flat keratometry	Use an optical biometer to measure	Baseline, six-month follow-up, one-year follow-up, two-year follow-up
Secondary	Change in length thickness	Use an optical biometer to measure	Baseline, six-month follow-up, one-year follow-up, two-year follow-up
Secondary	Change in anterior chamber depth	Use an optical biometer to measure	Baseline, six-month follow-up, one-year follow-up, two-year follow-up
Secondary	Change in central corneal thickness	Use an optical biometer to measure	Baseline, six-month follow-up, one-year follow-up, two-year follow-up