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Eye muscle surgery showdown: which fix for wandering eyes works best?

NCT ID NCT07637253

Disease control Sponsor: Başakşehir Çam & Sakura City Hospital 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study compared two surgical methods to correct exotropia, a condition where one eye turns outward. In one group, a piece of the inner eye muscle was removed and reattached; in the other, the muscle was folded and shortened. Both groups also had the outer eye muscle loosened. Researchers measured eye alignment and focusing ability before and after surgery in 85 patients aged 5 to 40. The goal was to see which technique gives better results for eye position and focusing.

What this could mean

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

Active substance
surgical procedure (medial rectus resection or plication combined with lateral rectus recession)
What this could lead to
If one technique proves better, it could help surgeons choose the best approach for correcting exotropia and preserving focusing ability.
What could go wrong
This is a small, completed study with 85 participants, so results may not apply to all patients. Surgery always carries risks like infection or overcorrection.

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

85 people

The number who actually took part.

Started

Jan 2024

Finished

Aug 2025

Lead sponsor

A government agency

The lead sponsor is a government body.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

5 to 40 years

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: * Patients aged 5 to 40 years. * Diagnosis of basic primary exotropia. * Stable deviation angle over three consecutive preoperative visits. * Deviation angle of at least 20 prism diopters. * Literacy and cooperation sufficient to perform accommodative amplitude testing. * Patients who agreed to undergo unilateral horizontal strabismus surgery. * Written informed consent obtained from the participant and/or legal guardian. Exclusion Criteria: * Spherical refractive error greater than ±5.00 diopters. * Cylindrical refractive error greater than ±3.50 diopters. * Best-corrected visual acuity worse than 0.1 logMAR. * Paralytic or restrictive strabismus. * Previous strabismus surgery. * Presence of additional ocular pathology, including glaucoma, cataract, uveitis, scleritis, retinal disease, macular disease, or optic neuropathy. * History of ocular trauma. * Axial length greater than 26.5 mm. * Aphakia or pseudophakia. * High accommodative convergence/accommodation ratio. * Presence of systemic disease. * Use of medications known to affect accommodation, including topical pilocarpine, cycloplegics, tricyclic antidepressants, or anticholinergic agents. * Incomplete ophthalmologic or accommodative examinations. * Loss to follow-up.

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Conditions

The condition(s) this trial relates to.

exotropia eye accommodation disease strabismus

As listed by the trial registrant

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

Accomodation Exotropia Primary exotropia Strabismus Strabismus surgery

Contacts and locations

Locations

  • University of Health Sciences, Basaksehir Cam and Sakura City Hospital

    Istanbul, Basaksehir, 34490, Turkey (Türkiye)

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