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Effectiveness of Telescopic Magnification in the Treatment of Amblyopia

NCT00970554 · Status: COMPLETED · Phase: PHASE1/PHASE2 · Type: INTERVENTIONAL · Enrollment: 15

Last updated 2013-08-27

No results posted yet for this study

Summary

Amblyopia is a visual impairment of one eye that results from disuse of that eye during early brain development. The standard treatment for amblyopia consists of patching or pharmacological penalization of the sound eye. Unfortunately, approximately 50% of amblyopic children do not respond to these therapies, with poor compliance being a major factor in treatment failure. One new treatment strategy involves patching the sound eye while using a telescopic device on the amblyopic eye to magnify the images formed in the amblyopic eye. Children were randomized to receive either daily patching of the sound eye for 30 minutes only (patching only group), or daily patching of the sound eye for 30 minutes plus simultaneous use of a telescopic device by the amblyopic eye during patching (patching plus telescope group).

Conditions

  • Amblyopia

Interventions

OTHER

Patching

Patching of the sound eye for 30 minutes a day for 17 weeks.

OTHER

Telescopic magnification

Patching of the sound eye plus simultaneous use of a telescopic device by the amblyopic eye for 30 minutes a day for 17 weeks.

Sponsors & Collaborators

  • The Hospital for Sick Children

    lead OTHER

Principal Investigators

  • Agnes Wong, MD · The Hospital for Sick Children, Toronto, Canada

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
4 Years
Max Age
17 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2007-12-31
Primary Completion
2009-05-31
Completion
2009-05-31

Countries

  • Canada

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT00970554 on ClinicalTrials.gov