A Pilot Randomized Trial Evaluating Short-Term Effectiveness of Vision Therapy in Children With Intermittent Exotropia
Southern California College of Optometry at Marshall B. Ketchum University
Summary
The main objective of this randomized trial comparing vision therapy to observation is to determine the short-term effectiveness of vision therapy on distance intermittent exotropia control. The results will help determine whether to proceed to a full-scale, long-term randomized trial.
Description
Vision therapy (VT) is a commonly prescribed treatment for children with intermittent exotropia (IXT). The effectiveness of VT as a treatment modality for children with IXT is unknown because previous studies have largely limited observational or retrospective case series without comparison groups. The objective of this multi-centered pilot randomized trial of VT for IXT compared to observation is to 1) determine the short-term effectiveness of VT on distance intermittent exotropia and 2) determine the feasibility of recruitment and retention of children aged 8 to 16 years old with IXT to part…
Eligibility
- Age range
- 8–16 years
- Sex
- All
- Healthy volunteers
- No
Major Inclusion Criteria- * Age 8 - 16 years * Intermittent exotropia meeting all of the following: * Distance exodeviation of 15∆ to 35∆ by prism alternating cover test (PACT) * IXT, exophoria, or orthophoria at near * Near exodeviation that does not exceed the distance exodeviation by more than 10∆ * Mean distance control score of 2 points or more with at least one measure being 3 points or higher * Mean near control score less than 5 points * Random dot stereopsis of 200" or better on Preschool Randot Stereotest * Willingness to accept randomization and no plan to relocate in th…