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Healthy eyes reveal secrets: new study maps key vision measurements

NCT ID NCT05613517

Knowledge-focused Sponsor: Assistance Publique - Hôpitaux de Paris Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 26, 2026

Summary

This study looked at 76 healthy adults to understand how eye dominance (which eye your brain prefers), the angle lambda (a measure of eye alignment), and fixation disparity (how the eyes focus together) are related. Researchers used simple eye exams and photographs to measure these traits. The goal was to gather basic knowledge that could help improve eye surgeries and vision care in the future.

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 could help eye doctors better understand normal eye measurements, potentially improving surgical planning and vision tests.
What could go wrong
This is a small, completed observational study in healthy people only. It does not test any treatment, so its direct impact on patient care is limited.

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

76 people

The number who actually took part.

Started

Nov 2022

Finished

Feb 2024

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

Healthy individuals without visual disorders

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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: \- Informed major subject not opposing to their participation in the study Exclusion Criteria: * Subject with strabismus or organic ophthalmologic pathology * Or presenting a visual acuity lower than 10/10th * Or with a history of eye surgery

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Conditions

The condition(s) this trial relates to.

eye disorder

As listed by the trial registrant

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

No eye disorder

Contacts and locations

Locations

  • Hôpital Necker-Enfants Malades

    Paris, 75015, France

More trials for these conditions

Other studies related to the condition(s) this trial covers.