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CompletedNCT00315198ATS6Updated Mar 24, 2010

Trial Comparing Near Versus Distance Activities While Patching for Amblyopia in Children 3 to <7 Years Old

A Phase 3 interventional study of Eye Patch and Near activities in Amblyopia, sponsored by Jaeb Center for Health Research. Completed at 2 sites in United States. Open to participants aged 3 Years to 6 Years. Per ClinicalTrials.gov, last updated 2010-03-24.

Sponsored by Jaeb Center for Health Research · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
425
Allocation
Randomized
Ages
3 Years to 6 Years
Sex
All
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Study summary

Ths purpose of this study is to determine whether "near" activities enhance the effect of patching on visual acuity improvement in strabismic and anisometropic amblyopia when compared with "distance" activities in the treatment of moderate amblyopia and severe amblyopia in children 3 to \<7 years old.

Read the detailed description

The value of "near visual activities" while patching for amblyopia is controversial. Some pediatric eye care providers currently recommend that the child perform near visual tasks while wearing a patch over the sound eye, while other pediatric eye care providers do not prescribe any specific visual tasks to be performed while the patch is worn.

In previous randomized studies of patching doses for amblyopia conducted by the Pediatric Eye Disease Investigator Group, near visual activities were incorporated into the prescribed treatment regimes. Although different doses of patching, combined with near visual activities, were successful in improving visual acuity in most children, it is unclear whether concurrent near visual activities enhanced the effect of patching.

This study is designed as an efficacy study, making effort to maximize adherence to treatment group assignments.

The study has been designed as a simple trial that, other than the type of amblyopia therapy being determined through the randomization process, approximates standard clinical practice. The two treatment regimens for the 17 week treatment period are: 1) 2 hours of daily patching combined with near visual activities while patching and 2)2 hours of daily patching combined with distance visual activities while patching.

02

Conditions studied

  • Amblyopia

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Keywords

  • amblyopia
  • patching
  • visual activities
03

In context

Amblyopia

183 studies on the registry are indexed under Amblyopia; 43 are open to participants now.

This study's enrollment of 425 is above the median of 60 across 133 interventional studies indexed under Amblyopia.

Browse Amblyopia studies →

Lead sponsor

Jaeb Center for Health Research is the lead sponsor of 126 studies on the registry; 17 are open to participants now.

Of its 16 completed or terminated interventional studies of FDA-regulated products, 14 (88%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
3 Years to 6 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Patients must be 3 to less than 7 years old with amblyopia due to strabismus, anisometropia, or both.
  • Visual acuity in the amblyopic eye must be between 20/40 and 20/400 inclusive, visual acuity in the sound eye 20/40 or better and inter-eye acuity difference > 3 logMAR lines.
  • Spectacles, if needed, must be worn for at least 16 weeks or until visual acuity documented to be stable.

Exclusion criteria

Exclusion Criteria:

  • Prior amblyopia treatment other than spectacles in the past month.
  • More than one month of amblyopia treatment in the past 6 months.
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Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
425 participants (actual)

Study arms

  • Active comparator
    Near activities

    2 hours of daily patching combined with near visual activities while patching

    Device: Eye Patch · Procedure: Near activities

  • Active comparator
    Distance activities

    2 hours of daily patching combined with distance visual activities while patching

    Device: Eye Patch · Procedure: Distance activities

Interventions

  • DeviceEye Patch

    2 hours daily patching

    Also known as: Coverlet, 3M Opticlude, Ortopad®

  • ProcedureNear activities

    near visual activities while patching

  • ProcedureDistance activities

    distance visual activities while patching

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What researchers measure

Primary outcomes

  1. Visual acuity

    Time frame: 8 weeks

Secondary outcomes

  1. Visual acuity

    Time frame: 17 weeks

07

Study locations

2 sites
  • Indiana University School of Optometry
    Bloomington, Indiana 47405, United States
  • Mayo Clinic Department of Ophthalmology
    Rochester, Minnesota 55905, United States
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References and documents

Publications

  • Pediatric Eye Disease Investigator Group. A randomized trial of near versus distance activities while patching for amblyopia in children aged 3 to less than 7 years. Ophthalmology. 2008 Nov;115(11):2071-8. doi: 10.1016/j.ophtha.2008.06.031. Epub 2008 Sep 11. PubMed 18789533 ↗
  • Wallace DK, Lazar EL, Melia M, Birch EE, Holmes JM, Hopkins KB, Kraker RT, Kulp MT, Pang Y, Repka MX, Tamkins SM, Weise KK; Pediatric Eye Disease Investigator Group. Stereoacuity in children with anisometropic amblyopia. J AAPOS. 2011 Oct;15(5):455-61. doi: 10.1016/j.jaapos.2011.06.007. PubMed 22108357 ↗
  • Repka M, Simons K, Kraker R; Pediatric Eye Disease Investigator Group. Laterality of amblyopia. Am J Ophthalmol. 2010 Aug;150(2):270-4. doi: 10.1016/j.ajo.2010.01.040. Epub 2010 May 8. PubMed 20451898 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 24, 2010, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00315198
Lead sponsor
Jaeb Center for Health Research
Collaborators
National Eye Institute (NEI)
First posted
Apr 18, 2006
Start date
Feb 2005
Primary completion
Dec 2007
Completion
Dec 2007
Last update
Mar 24, 2010

Study contacts

Don Lyon, O.D.
study chair · Indiana University
Jonathan M. Holmes, M.D.
study chair · Mayo Clinic Department of Ophthalmology

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in May 2009. You cannot join it, but the record below documents what was studied.

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