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Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/study/NCT04784390
Registration number
NCT04784390
Ethics application status
Date submitted
2/03/2021
Date registered
5/03/2021
Titles & IDs
Public title
Proof of Concept Study of Binocular Videogames Versus Patching for Amblyopia
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Scientific title
A 16 Week Randomized, Single-masked, Multicenter Proof of Concept Study of Binocular Videogames Versus Patching for Amblyopia in Children 4-7 Years of Age With an Open-label Substudy of Binocular Videogames in Children 8-12 Years of Age
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Secondary ID [1]
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CDDO001F12201
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Universal Trial Number (UTN)
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Amblyopia
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Condition category
Condition code
Eye
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Diseases / disorders of the eye
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Neurological
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Other neurological disorders
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Treatment: Devices - Binocular video games
Treatment: Devices - Patching of the sound eye
Active comparator: Patching - Patching of the sound eye (fellow eye) - patients will have their sound eye (fellow eye) patched 2 hours per day 7 days a week for 16 weeks.
Experimental: Binocular video games - Binocular video games - patients will play 1 hour of binocular video game of choice (Dig Rush and/or Monster Burner) a day 7 days a week for 8 to 12 weeks.
Treatment: Devices: Binocular video games
Patients will play 1 hour of binocular video game of choice (Dig Rush and/or Monster Burner) a day 7 days a week for 8 to 12 weeks.
Treatment: Devices: Patching of the sound eye
Patients will have their sound eye (fellow eye) patched 2 hours per day 7 days a week for 16 weeks.
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Intervention code [1]
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Treatment: Devices
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Comparator / control treatment
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Control group
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Outcomes
Primary outcome [1]
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Change in best corrected visual acuity (BCVA) in the amblyopic eye.
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Assessment method [1]
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Part A: Best corrected visual acuity (BCVA) in the amblyopic eye will be measured via mixed model repeated measures (MMRM).
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Timepoint [1]
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from Baseline to Week 8
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Secondary outcome [1]
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Attain BCVA of 0.1 logMAR or better in the amblyopic eye
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Assessment method [1]
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Part A: Best corrected visual acuity (BCVA) in the amblyopic eye will be measured via mixed model repeated measures (MMRM).
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Timepoint [1]
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at Week 4, Week 8, Week 12, and Week 16.
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Secondary outcome [2]
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Change in stereoacuity or binocular video game relative to patching.
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Assessment method [2]
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Part A: Stereoacuity will be assessed at near using Randot Preschool Stereoacuity Test (Stereo Optical, Inc.).
The test is performed using 3 stereotest booklets while wearing 3D glasses. In short, in each test booklet, the left-hand page shows two-dimensional black-and-white silhouettes of two sets (panels) of four test shapes. The right-hand page contains two sets of four random-dot patterns in different sequences that are on the left-hand page. In each set of random-dot patterns, one contains no test shape, while the remaining contains test shapes. The child must correctly identify at least two of the three test shapes at each disparity level.
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Timepoint [2]
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from Baseline to Week 4, Week 8, Week 12, and Week 16.
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Secondary outcome [3]
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Attain a 2-line or better improvement in BCVA in the amblyopic eye
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Assessment method [3]
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Part A: Best corrected visual acuity (BCVA) in the amblyopic eye will be measured via mixed model repeated measures (MMRM).
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Timepoint [3]
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at Week 4, Week 8, Week 12, and Week 16.
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Secondary outcome [4]
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Change in BCVA in the amblyopic eye
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Assessment method [4]
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Part A: Best corrected visual acuity (BCVA) in the amblyopic eye will be measured via mixed model repeated measures (MMRM).
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Timepoint [4]
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from Baseline to Week 4, Week 12, and Week 16.
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Secondary outcome [5]
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Frequency of treatment-emergent Adverse Events
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Assessment method [5]
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Part A and B: An adverse event (AE) is any untoward medical occurrence (e.g. any unfavorable and unintended sign \[including abnormal laboratory findings\], symptom or disease) in a clinical study subject, user or other person, after providing written informed consent for participation in the study. Therefore, an AE may or may not be temporally or causally associated with the use of the study device, i.e., videogame system (tablet, software, 3D glasses) or patch.
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Timepoint [5]
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from Baseline to week 16
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Secondary outcome [6]
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Time played as recorded in the diary
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Assessment method [6]
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Part A: To assess compliance with treatment
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Timepoint [6]
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from Baseline to week 12
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Secondary outcome [7]
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Time patched as recorded in the diary
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Assessment method [7]
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Part A: To assess compliance with treatment
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Timepoint [7]
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from Baseline to week 16
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Secondary outcome [8]
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Time played as recorded in the video game system
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Assessment method [8]
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Parts A and B: To assess compliance with treatment
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Timepoint [8]
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from Baseline to week 12
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Secondary outcome [9]
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Percentage of participants who complete at least 75% of prescribed game play
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Assessment method [9]
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Parts A and B: To assess compliance with treatment
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Timepoint [9]
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from Baseline to Week 12
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Eligibility
Key inclusion criteria
1. Written informed consent must be signed by the parent(s) or legal guardian(s) prior to participation in the study.
2. Male or female children 4 to 7 years old at Screening (Part A) or 8 to 12 years old at Screening (Part B).
3. Diagnosis of amblyopia due to strabismus, anisometropia, or both.
4. Best corrected visual acuity (BCVA) of amblyopic eye (study eye) between 0.3 to 1.0 Logarithm of the Minimum Angle of Resolution (logMAR) (20/40 to 20/200 Snellen inclusive, 33 to 72 ETDRS letters inclusive) at Screening and Baseline.
5. BCVA of the sound eye (fellow eye) 0.1 logMAR (20/25 Snellen, 80 Early Treatment Diabetic Retinopathy Study (ETDRS) letters) or better in children 5 years of age and older or 0.2 logMAR (20/30 Snellen, 75 ETDRS letters) or better in children 4 years of age at Screening and Baseline.
6. Interocular difference of BCVA at least 0.3 logMAR (=3 lines; ETDRS=15 letters) at Baseline.
7. Patient is able to play the binocular game (Dig Rush and Monster Burner) on at least level 3 on the study tablet under binocular conditions (with red-green glasses).
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Minimum age
4
Years
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Maximum age
12
Years
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
1. Treatment for amblyopia with patching, Bangerter filter, vision therapy, or binocular treatment in the past 1 week prior to Screening, or atropine in the past 4 weeks prior to Screening.
2. Treatment for amblyopia with patching, Bangerter filter, vision therapy, binocular treatment or atropine for more than 1 year prior to screening cumulatively.
3. Myopia = -6.00D spheric equivalent in either eye at Screening or Baseline.
4. Prior amblyopia treatment (patching, Bangerter filter, vision therapy, binocular treatment or atropine) for more than a year prior to screening cumulatively.
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Study design
Purpose of the study
Treatment
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Allocation to intervention
Randomised controlled trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
Blinded (masking used)
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Who is / are masked / blinded?
The people assessing the outcomes
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Intervention assignment
Parallel
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Other design features
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Phase
Phase 1
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Stopped early
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Data analysis
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Reason for early stopping/withdrawal
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Other reasons
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Date of first participant enrolment
Anticipated
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Actual
30/06/2021
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
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Actual
3/08/2022
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Sample size
Target
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Accrual to date
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Final
27
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Recruitment in Australia
Recruitment state(s)
NSW
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Recruitment hospital [1]
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Novartis Investigative Site - North Ryde
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Recruitment postcode(s) [1]
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2109 - North Ryde
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Recruitment outside Australia
Country [1]
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United States of America
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State/province [1]
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Florida
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Country [2]
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United States of America
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State/province [2]
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Illinois
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Country [3]
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United States of America
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State/province [3]
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Maryland
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Country [4]
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United States of America
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State/province [4]
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Nevada
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Country [5]
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Canada
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State/province [5]
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Ontario
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Funding & Sponsors
Primary sponsor type
Commercial sector/industry
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Name
Novartis Pharmaceuticals
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Address
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Country
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Ethics approval
Ethics application status
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Summary
Brief summary
The purpose of this PoC study was to evaluate the potential therapeutic efficacy of binocular video games played on a tablet and to compare the efficacy of binocular video games versus patching in amblyopic patients 4 to 7 years old (Part A) as well as to gain experience with binocular video games in older children population of 8 to12 years old (Part B). Part A and Part B was designed to provide long term data on durability of binocular video games treatment. The study consisted of two parts, Part A: randomized, single masked PoC study in children 4 to 7 years old at Screening, and Part B: open-label substudy in children 8 to 12 year old at Screening.
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Trial website
https://clinicaltrials.gov/study/NCT04784390
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Trial related presentations / publications
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Public notes
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Contacts
Principal investigator
Name
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Novartis Pharmaceuticals
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Address
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Novartis Pharmaceuticals
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Country
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Phone
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Fax
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Email
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Contact person for public queries
Name
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Address
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Country
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Phone
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Fax
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Email
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Contact person for scientific queries
Data sharing statement
Will individual participant data (IPD) for this trial be available (including data dictionaries)?
No
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No/undecided IPD sharing reason/comment
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What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
No documents have been uploaded by study researchers.
Results not provided in
https://clinicaltrials.gov/study/NCT04784390