Can red light help nearsighted eyes? new study seeks answers
NCT ID NCT07369804
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests if a special red-light device, used at home for 3 minutes twice a day, can safely improve eye health in adults with nearsightedness (myopia). Fourteen adults aged 18-50 will use the light for 28 days. The goal is to see if the therapy thickens a layer in the eye called the choroid and improves blood flow, which could help control nearsightedness.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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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
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About 14 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Oct 2025
- Expected to finish
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Jul 2026
An estimate. End dates often move.
- Lead sponsor
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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
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18 to 50 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. Age 18-50 years. 2. SE refractions between -0.50 and -6.00 diopters (D) 3. Astigmatism of 1.50 D or less. 4. Best corrected monocular visual acuity better than 20/20 (Snellen equivalent). 5. Willingness to provide written informed consent and comply with the treatment protocol. Exclusion Criteria: 1. Strabismus or binocular vision abnormalities in either eye. 2. Ocular abnormalities in either eye or other systemic abnormalities. 3. Previous or current use of myopia control interventions (e.g., orthokeratology, low-dose atropine, pirenzepine) within the past 6 months. 4. History of ocular surgeries (e.g., cataract surgery and LASIK/SMILE). 5. Afterimage time \> 5 minutes (contraindications to RLRL therapy).
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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The Hong Kong Polytechnic University
RECRUITINGHong Kong, Hong Kong, China
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