Prism Adaptation in Symptomatic Esophoria - Effect of Shorter Time Intervals and Surgical Outcomes Based on Prism Adaptation
Recruiting now · Not applicable
Conditions studied: Esophoria
In brief
This study is a prospective randomized study aiming to investigate the effect of prism adaptation before surgery for symptomatic esophoria on the number of reoperations, the occurrence of over- and under-correction after the first surgery, and symptom resolution. Additionally, we aim to define the optimal duration of prism adaptation.
Key facts
- Study ID
- NCT06729710
- Run by
- Rigshospitalet, Denmark
- People needed
- 100
- Starts
- 2025-05-19
- Expected to finish
- 2030-01-01
- Last updated by the study team
- 2025-07-22
Who can join
Age: 18 and older, up to 65. Sex: any. Healthy volunteers: not accepted.
You may qualify if…
- Patients with symptomatic esophoria who meet one or more of the following criteria:
- Double vision
- Asthenopia (eye strain)
- Headaches related to esophoria
- Worsening of symptoms during fatigue, sleep deprivation, reading, illness, or alcohol consumption.
You may not qualify if…
- Age between 18 and 65 years at date of inclusion.
- Accommodative esotropia or esophoria
- Myopia exceeding 10 diopters in the most myopic meridian
- Treatment with botulinum toxin in an eye muscle within four months prior to inclusion
- Inability to undergo reliable orthoptic measurements or prism adaptation
- Previous strabismus surgery
- Pregnancy or breastfeeding within 12 months prior to inclusion
- Myogenic disorders (including Myasthenia Gravis)
- Restrictive strabismus (including previous eye muscle trauma or Graves' orbitopathy)
- Eye muscle paresis
- Maximum prism-adapted deviation angle >40 prism diopters (PD) in any gaze direction for distance
- Maximum prism-adapted deviation angle with ≥20 PD difference between near and distance measurements
Where it is running
- Rigshospitalet — Copenhagen, Denmark (enrolling)
Full record on ClinicalTrials.gov
Trial information comes from ClinicalTrials.gov and is refreshed daily. TrialsForMe does not provide medical care and does not run the studies it lists.