NCT03767985

Brief Summary

Amblyopia affects 3% of the children and is caused by strabismus, anisometropia or both. Standard treatment is glasses and patching therapy. From North-America, behavioural training, i.e. dichoptic training, perceptual learning and video gaming, has become increasingly popular to improve visual acuity not only in children but also in adults. In this study we aim to compare the standard occlusion therapy with dichoptic video gaming.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
124

participants targeted

Target at P50-P75 for not_applicable

Timeline
Completed

Started Dec 2017

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

December 18, 2017

Completed
12 months until next milestone

First Submitted

Initial submission to the registry

December 6, 2018

Completed
1 day until next milestone

First Posted

Study publicly available on registry

December 7, 2018

Completed
1.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 24, 2020

Completed
1.5 years until next milestone

Study Completion

Last participant's last visit for all outcomes

December 31, 2021

Completed
Last Updated

August 25, 2021

Status Verified

August 1, 2021

Enrollment Period

2.5 years

First QC Date

December 6, 2018

Last Update Submit

August 20, 2021

Conditions

Outcome Measures

Primary Outcomes (1)

  • Visual Acuity improvement

    Visual Acuity improvement (logMAR units/time period) in children with amblyopia treated with patching therapy vs dichoptic video gaming

    24 weeks

Study Arms (2)

Occlusion therapy

ACTIVE COMPARATOR

Participants are prescribed 2 hours of occlusion therapy per day, 7 days a week.

Other: Occlusion therapy

Dichoptic video game therapy

EXPERIMENTAL

Participants receive dichoptic video game therapy: 1 hour per week at the out-patient clinic under direct supervision.

Other: Dichoptic video game therapy

Interventions

Dichoptic video gaming for 1 hour per week, viewed through the Oculus Rift.

Dichoptic video game therapy

Occlusion therapy for 2 hours per day, 7 days a week

Occlusion therapy

Eligibility Criteria

Age4 Years - 55 Years
Sexall
Healthy VolunteersNo
Age GroupsChild (0-17), Adult (18-64)

You may qualify if:

  • Amblyopia; an interocular difference in visual acuity of at least 2 logMAR lines.

You may not qualify if:

  • A non-comitant or large angle constant strabismus \>30Prism Dioptres, a neurological disorder, nystagmus, other eye disorders and diminished acuity due to medication, brain damage or trauma.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Erasmus Medical Center

Rotterdam, South Holland, 3015 GD, Netherlands

RECRUITING

Related Publications (1)

  • Tan ET, Kadhum A, Telleman MA, Treur A, Bruijning J, Loudon SE. How do parents experience patching or dichoptic action video gaming as amblyopia treatment? A qualitative study exploring treatment preferences and information needs to facilitate decision-making. Ophthalmic Physiol Opt. 2023 Jul;43(4):649-659. doi: 10.1111/opo.13132. Epub 2023 Apr 3.

MeSH Terms

Conditions

Amblyopia

Condition Hierarchy (Ancestors)

Brain DiseasesCentral Nervous System DiseasesNervous System DiseasesVision DisordersSensation DisordersNeurologic ManifestationsEye DiseasesSigns and SymptomsPathological Conditions, Signs and Symptoms

Study Officials

  • Johannes R Vingerling, MD, PhD

    Erasmus Medical Center

    STUDY DIRECTOR

Central Study Contacts

Sjoukje E Loudon, MD, PhD

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
CARE PROVIDER
Masking Details
The research orthoptist that does the orthoptic examinations is masked to the randomization.
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: Participants are randomized to either the standard patching therapy or the dichoptic video game therapy.
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
MD, PhD

Study Record Dates

First Submitted

December 6, 2018

First Posted

December 7, 2018

Study Start

December 18, 2017

Primary Completion

June 24, 2020

Study Completion

December 31, 2021

Last Updated

August 25, 2021

Record last verified: 2021-08

Locations