Clinical trial Recruiting at 1 site Interventional Ages 8 to 13

Using low-level red light therapy to control myopia in children

Official title: Efficacy of Repeated Low-level Red-light Therapy in Myopia Control: a Single Arm Controlled Trial

Run by University of California, San Francisco · NCT05606237 · Data updated 2026-11-12

This study is testing if low-level red light therapy can help control myopia in children aged 8-13 by comparing it to regular glasses over a year.

Quick facts

Study typeInterventional
Ages8 Years to 13 Years
SexAll
Enrollment90 (estimated)
SponsorUniversity of California, San Francisco
Academic / other
Locations1 site (San Francisco, California)
StatusRecruiting
StartedJuly 14, 2023
Main results expectedJanuary 14, 2027
Study endsJanuary 14, 2027
Registry record updatedJanuary 28, 2026
Trial IDNCT05606237 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are myopic children aged 8-13 years from Hispanic, African, or Caucasian backgrounds with specific refractive criteria.

Probably not a fit

Patients with strabismus, significant ocular abnormalities, or those who do not comply with treatment may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study evaluates the safety and effectiveness of low-level red light therapy for controlling myopia in children aged 8-13 from diverse ethnic backgrounds. Participants will be randomly assigned to either receive the therapy twice daily or wear single vision spectacles only. The study will measure changes in axial elongation and visual acuity over a 12-month period, with assessments at multiple intervals. The goal is to confirm the efficacy of this innovative treatment approach across different populations.

Why it matters

Potential benefit: If successful, this therapy could significantly reduce the progression of myopia in children, potentially preventing severe vision impairment later in life.

How similar studies have gone: Previous studies have shown promising results for low-level red light therapy in myopia control, particularly in Chinese populations, making this approach both innovative and potentially impactful.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Provision of consent
2. Non-Chinese Ethnicity
3. Age: ≥8 and ≤13 years at enrollment
4. Myopia: Spherical equivalent refractions (SERs) under cycloplegia: -1.00 to -5.00 diopters (D)

4\) Astigmatism of 2.50 D or less 5) Anisometropia of 1.50 D or less 6) Corrected monocular logMAR visual acuity (VA): 1.0 or better 7) Consent to participate in random allocation of grouping 8) Fluent in English 9) Willing and able to participate in all required activities of the study6) Corrected monocular logMAR visual acuity (VA): 1.0 or better

Exclusion Criteria:

1. Strabismus and binocular vision abnormalities in either eye
2. Ocular abnormalities in either eye or other systemic abnormalities that affect participate in all required activities of the study.
3. Other reasons, including but not limited to severe physical and cognitive disability, that the physician may consider inappropriate for enrollment
4. Noncompliance with treatment
5. Children whose parents do not sign informed consent

Where it's running

  • University of California, San Francisco
    San Francisco, California, United States
    Recruiting

Study contacts

  • Principal investigator: Tiffany Chen, MD — University of California, San Francisco
  • Study coordinator: Tiffany Chen, MD
  • Email: Tiffany.A.Chen@ucsf.edu
  • Phone: 4155143503

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.