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30,000 Kids' eyes measured to map normal vision development

NCT ID NCT05770661

Knowledge-focused Sponsor: Shanghai Eye Disease Prevention and Treatment Center 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 07, 2026 · Updated 1 time

Summary

This observational study is measuring the eye length of 30,000 Chinese children aged 3 to 18 years to create standard growth charts for healthy eyes. Researchers will follow each child for three years with yearly check-ups. The goal is to better understand how eyes grow and when nearsightedness (myopia) starts, which could help doctors spot problems earlier.

What this could mean

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

What this could lead to
If successful, this study could provide standard eye-growth charts for Chinese children, helping doctors better track and understand myopia development.
What could go wrong
This is an observational study, not a treatment trial. It only measures eye length and does not test any intervention, so it cannot directly improve vision or prevent myopia.

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.

Participants

About 30,000 people

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

Started

Mar 2023

Expected to finish

Dec 2026

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.

Who is studied

Students aged from 3 to 18 years old were recruited from schools to enroll the study.

Ages

3 to 18 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: * Aged 3 to 18 years * Have been lived in the research areas for at least one year, and will not move to other places in the following two years * Parents or guardians sign an informed consent form, and children over 6 years old need oral consent to participate Exclusion Criteria: * Mental diseases, unable to cooperate to complete the eye assessment * Ophthalmic diseases, inability to cooperate to complete the inspection

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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.

Axial length Child development Myopia

How to take part

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

  1. The places running it

    2 sites. 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

  • Shanghai Eye Disease Prevention & Treatment Center

    RECRUITING

    Shanghai, Shanghai Municipality, 200040, China

  • Shanghai Eye Disease Prevention and Treatment Center

    RECRUITING

    Shanghai, China

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