Actively Recruiting
Prism Adaptation in Symptomatic Esophoria - Effect of Shorter Time Intervals and Surgical Outcomes Based on Prism Adaptation
Led by Rigshospitalet, Denmark · Updated on 2025-07-22
100
Participants Needed
1
Research Sites
241 weeks
Total Duration
On this page
AI-Summary
What this Trial Is About
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.
CONDITIONS
Official Title
Prism Adaptation in Symptomatic Esophoria - Effect of Shorter Time Intervals and Surgical Outcomes Based on Prism Adaptation
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Patients with symptomatic esophoria experiencing one or more of the following: double vision, eye strain (asthenopia), headaches related to esophoria, or worsening symptoms during fatigue, sleep deprivation, reading, illness, or alcohol consumption
You will not qualify if you...
- Age below 18 or above 65 years at time of inclusion
- Accommodative esotropia or esophoria
- Myopia over 10 diopters in the most myopic meridian
- Botulinum toxin treatment in an eye muscle within 4 months before inclusion
- Inability to undergo reliable orthoptic measurements or prism adaptation
- Previous strabismus surgery
- Pregnancy or breastfeeding within 12 months before inclusion
- Myogenic disorders including Myasthenia Gravis
- Restrictive strabismus including previous eye muscle trauma or Graves' orbitopathy
- Eye muscle paresis
- Maximum prism-adapted deviation angle greater than 40 prism diopters in any gaze direction for distance
- Maximum prism-adapted deviation angle difference of 20 prism diopters or more between near and distance measurements
AI-Screening
AI-Powered Screening
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Trial Site Locations
Total: 1 location
1
Rigshospitalet
Copenhagen, Denmark, 2600
Actively Recruiting
Research Team
M
Mikael Hofsli, M.D
CONTACT
How is the study designed?
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
RANDOMIZED
Model
PARALLEL
Primary Purpose
TREATMENT
Number of Arms
2
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