Osteopathy added to vision therapy for vergence problems

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This randomized, double-blind study compares three parallel groups: optometric vision therapy alone, vision therapy with osteopathic manual therapy, and vision therapy with a sham osteopathic intervention. Primary outcomes are improvements in eye movement and visual efficiency measured by video-oculography systems REMOBI and EyeSeeCam. Secondary outcomes include symptom changes and functional vision during near tasks. Participants are adults with screen-based work demands and binocular vision dysfunction, without confounding ocular or neurological conditions. The trial aims to determine if adjunct osteopathic care provides added benefit beyond standard vision therapy.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* Adult workers (≥18 years) whose regular occupational duties involve screen-based work.
* Presence of symptoms consistent with binocular vision dysfunction, defined as a Convergence Insufficiency Symptom Survey (CISS-V15) score ≥21 at baseline screening.

Exclusion Criteria:

* Severe ocular disease or systemic conditions affecting vision (e.g., age-related macular degeneration, retinopathies, glaucoma, keratoconus).
* Neurological disorders affecting ocular motility or visual function (e.g., multiple sclerosis; cranial nerve III, IV, V, or VI palsy).
* Manifest ocular deviation not suitable for management with visual therapy.
* Inadequate refractive correction or prism requirement \>10 prism diopters (\>10Δ).
* Refractive surgery (LASIK/PRK), cataract surgery, or any ocular surgery likely to influence binocular vision within the past 6 months.
* Use of medications known to affect ocular motility or accommodative function.
* Cognitive impairment or neurological conditions interfering with adherence to therapy instructions.
* Suppression or severe amblyopia limiting response to visual therapy.
* Best-corrected visual acuity \<0.5 decimal (equivalent to worse than 20/40) at distance or near.

Where it's running

• Jordi Zaragoza osteopatia
  Andorra la Vella, Andorra, Andorra Recruiting

Study contacts

• Principal investigator: Jordi Z Zaragoza Bort, Do — Private Practice, Andorra
• Study coordinator: JORDI Z ZARAGOZA BORT, MSc
• Email: jzaragozaosteopatia@gmail.com
• Phone: +376342813

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.