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Red light therapy shows promise for controlling myopia in children

NCT ID NCT05606237

Disease control Sponsor: University of California, San Francisco Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests whether a low-level red-light device can slow the progression of myopia (nearsightedness) in children aged 8 to 13. Participants use the device for 3 minutes twice a day. The goal is to see if it reduces eye growth and prevents worsening vision, building on promising results from a Chinese study.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Low-level red-light therapy device
What this could lead to
If successful, this could offer a quick, non-invasive way to control myopia in children, reducing the need for glasses or contacts.
What could go wrong
This is a small, early-stage trial with no control group, so results may not be definitive. The therapy requires twice-daily sessions, which may be hard to maintain.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 90 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jul 2023

Expected to finish

Jan 2027

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

8 to 13 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

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

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Conditions

The condition(s) this trial relates to.

myopia

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Myopia

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • University of California, San Francisco

    RECRUITING

    San Francisco, California, 94143, United States

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