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A new exercise for the eyes: could it restore 3D vision?

NCT ID NCT07803458

Disease control Sponsor: Centre for Eye and Vision Research 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Sep 03, 2026 · Last updated Sep 04, 2026 · Updated 1 time

Summary

This trial tests a computer-based training method designed to improve stereo vision, or depth perception, in adults with conditions like amblyopia (lazy eye) or strabismus (misaligned eyes). Participants aged 18 to 39 with impaired depth perception will be randomly assigned to either the active training or a control version. The active training presents different images to each eye and uses depth cues to guide attention, aiming to encourage the eyes to work together. The study will measure changes in stereoacuity, or the finest depth difference detectable, right after training and again at a 12-week follow-up.

What this could mean

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

Active substance
Attention-guided dichoptic visual search training, a computer-based exercise that presents different images to each eye to encourage them to work together.
What this could lead to
If it works, this training could offer a new way to restore depth perception in adults with lazy eye or misaligned eyes, improving daily tasks like judging distances.
What could go wrong
This is a small, early-stage trial with only 56 participants. The training may not produce lasting improvements, and benefits might not extend beyond the specific test used.

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 56 people

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

Expected to start

Nov 2026

An estimate. Start dates often move.

Expected to finish

Mar 2029

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

18 to 39 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 18-39 years (inclusive). * Deficient or anomalous stereoscopic vision with a stereoacuity \>= 70 sec arc or unmeasurable stereoacuity. * Best corrected visual acuity (BCVA) of \< 0.80 logMAR in both eyes, with at least one eye having a visual acuity of \<= 0.1 logMAR (uncorrected or corrected-to-normal with glasses or contact lenses). * Normal colour vision. * Good general health. Exclusion Criteria: * Previous history of ocular surgery (except for refractive correction surgery, where appropriate). * Pre-existing ocular conditions or medications that affect vision or visual function. * Pre-existing conditions or medications that affect neuropsychological function. * Presence of strabismus over 10 prism diopters at distance in current refractive correction measured by simultaneous prism and cover test, or large eccentric fixation. * Previous history of experiencing double vision (diplopia). * Identified at risk of developing diplopia due to binocular state and/or poor binocular control. * Inability to comprehend psychophysical test instructions given and/or consent for themselves.

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Conditions

The condition(s) this trial relates to.

amblyopia anisometropia binocular vision disease strabismus

As listed by the trial registrant

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

Amblyopia Anisometropia Binocular vision abnormalities Binocular vision disorder Strabismus

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

  • Centre for Eye and Vision Research Limited

    Hong Kong, Hong Kong SAR, HKG, Hong Kong

  • The Hong Kong Polytechnic University

    Hong Kong, Hong Kong SAR, HKG, Hong Kong

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