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Could your face shape predict your vision?

NCT ID NCT07460557

Knowledge-focused Sponsor: University of Zagreb 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 observational study in 120 healthy young adults aged 21-25 examines whether facial features are linked to eye measurements like eye length, which affects nearsightedness or farsightedness. Participants undergo non-invasive eye exams and 3D facial scans. The goal is to better understand how eye and face development are connected, potentially aiding future research.

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 improve understanding of how facial growth relates to eye development, potentially guiding future research on refractive errors.
What could go wrong
This is an early observational study with no treatment involved. Results may not lead to direct clinical applications, and findings may not apply to broader populations.

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 120 people

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

Expected to start

Mar 2026

An estimate. Start dates often move.

Expected to finish

Jul 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

Study participants will be selected from the population of healthy young adults aged 21 to 25 years who undergo routine ophthalmologic examination at the participating healthcare institution. The source population consists of individuals of the same ethnic background with completed craniofacial growth, normal ocular health, and no history of ocular or facial surgery, craniofacial anomalies, orthodontic treatment affecting maxillomandibular relationships, ocular or facial trauma, strabismus, amblyopia, or systemic diseases influencing facial morphology or ocular biometric parameters. Eligible individuals must have best-corrected visual acuity ≥ 1.0 and a body mass index between 18.5 and 24.9 kg/m². Participants will be stratified according to refractive status into myopic, emmetropic, and hyperopic groups.

Ages

21 to 25 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: Healthy young adults aged 21 to 25 years. Same ethnic background (to reduce population-related morphological variability). Best-corrected visual acuity ≥ 1.0. Normal findings of the anterior and posterior ocular segments. Refractive status determined by objective autorefractometry and confirmed by subjective refraction. Body mass index (BMI) between 18.5 and 24.9 kg/m². Willingness to participate and provision of written informed consent. Exclusion Criteria: Previous ocular surgery. Previous facial surgery. Craniofacial anomalies. Active or previous orthodontic therapy that may affect maxillomandibular relationships. Strabismus. Amblyopia. Ocular trauma. Facial trauma. Systemic diseases that may affect facial morphology or ocular biometric parameters.

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Conditions

The condition(s) this trial relates to.

hyperopia myopia refractive error

As listed by the trial registrant

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

Refractive errors

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 Zagreb School of Dental Medicine

    RECRUITING

    Zagreb, Croatia

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