- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03825107
Dichoptic Video Treatment for Amblyopia
October 20, 2021 updated by: Eileen Birch, Retina Foundation of the Southwest
Dichoptic Video Treatment for Amblyopia in Children Age 3-7 Years
- To determine whether watching contrast-rebalanced dichoptic videos is effective in improving visual acuity and reducing interocular suppression in amblyopic children
- To compare the amount of visual acuity improvement achieved with the videos to tha amount achieved with patching (standard treatment for amblyopia)
Study Overview
Status
Completed
Conditions
Intervention / Treatment
Detailed Description
Contrast-rebalanced binocular iPad tablet games (with fellow eye contrast reduced) have been shown to be an effective treatment for amblyopia.
However, the games can be challenging for some of the youngest children and boring for some of the older children with amblyopia.
To provide additional treatment options using the same contrast-rebalancing approach, we have processed animated videos to allow dichoptic viewing, with full contrast for the amblyopic eye and reduced contrast for the fellow eye.
Children will be randomly assigned to watch dichoptic videos (experimental treatment) or patch 2 hours/day every day(standard-of-care amblyopia treatment) for 2 weeks.
At the 2-week primary outcome visit, children in the patching group will cross over to the videos and return for a secondary outcome visit at 4 weeks.
Families will have the option to continue with the vdeos for up to 8 weeks.
Study Type
Interventional
Enrollment (Actual)
65
Phase
- Not Applicable
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
-
-
Texas
-
Dallas, Texas, United States, 75231
- Eileen E Birch
-
-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
3 years to 7 years (CHILD)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- 3 to 7 years old
- Amblyopic eye visual acuity 20/32-20/125
- Fellow eye visual acuity 20/16-25
- Interocular visual acuity difference of at least 2 lines
- Anisometropia or corrected strabsimus (<5pd)
- in glasses at least 8 weeks or no change in visual acuity over two visits
- no prior binocular treatment
- must be able to see full video screen
Exclusion Criteria:
- prematurity of 8 weeks or more
- coexisting ocular or systemic disease
- developmental delay
- poor ocular alignment (>=5 pd)
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: TREATMENT
- Allocation: RANDOMIZED
- Interventional Model: PARALLEL
- Masking: NONE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
ACTIVE_COMPARATOR: Patching
2 hours per day 7 days per week patching of the fellow eye
|
covering the fellow eye with an eyepatch to force use of the amblyopic eye
Other Names:
|
EXPERIMENTAL: Dichoptic Videos
watching 6 dichoptic videos during each 2 week period
|
watching contrast-rebalanced dichoptic videos to allow the two eyes to work together
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in visual acuity of the amblyopic eye
Time Frame: Baseline vs 2 weeks
|
HOTV (preferred) or picture chart
|
Baseline vs 2 weeks
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in visual acuity of the amblyopic eye
Time Frame: Baseline vs 4 weeks, 6 weeks, and 8 weeks
|
HOTV (preferred) or picture charts
|
Baseline vs 4 weeks, 6 weeks, and 8 weeks
|
Change in Stereoacuity
Time Frame: Baseline vs 2, 4, 6, 8 weeks
|
Randot Preschool Stereoacuity test
|
Baseline vs 2, 4, 6, 8 weeks
|
Change in Contrast Balance Index
Time Frame: Baseline vs 2, 4, 6, 8 weeks
|
Dichoptic Letter chart
|
Baseline vs 2, 4, 6, 8 weeks
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Publications and helpful links
The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (ACTUAL)
January 31, 2019
Primary Completion (ACTUAL)
July 6, 2021
Study Completion (ACTUAL)
August 31, 2021
Study Registration Dates
First Submitted
January 29, 2019
First Submitted That Met QC Criteria
January 29, 2019
First Posted (ACTUAL)
January 31, 2019
Study Record Updates
Last Update Posted (ACTUAL)
October 28, 2021
Last Update Submitted That Met QC Criteria
October 20, 2021
Last Verified
October 1, 2021
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- Dichoptic Video for Amblyopia
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
NO
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
No
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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Clinical Trials on patching
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City, University of LondonImperial College LondonCompleted
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The Hospital for Sick ChildrenCompleted
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