Anisometropia Amblyopia Improved by Perceptual Learning and Patching

July 9, 2007 updated by: Tri-Service General Hospital
To compare the effects of perceptual learning with patching on improving visual acuity and contrast sensitivity in payient with anisometropic amblyopia.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Patients with anisometropic amblyopia were randomized to patching or perceptual learning group. Corrected amblyopic logMAR visual acuity and contrast sensitivity function were measured at four-weekly intervals until visual acuity stabilized or amblyopia resolved. Improvement in visual acuity, contrast sensitivity, and the resolution of amblyopia were compared between groups.

Study Type

Interventional

Phase

  • Phase 3

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 55 years (Child, Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Anisometropia without strabismus
  • An interocular acuity difference of at least 0.2 logMAR in children (3-7 years of age) or in older children and adult patients without a history of patching or atropine penalization
  • All patients wore their spectacle at least one year

Exclusion Criteria:

  • A history of prior spectacle correction
  • A history of patching or optical penalization
  • The existence of an ocular disease that could contribute to decreased visual acuity
  • Learning difficulties
  • The presence of strabismus

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 Assignment
  • Masking: Single

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Corrected amblyopic logMAR visual acuity and contrast sensitivity function

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Tri-Service General Hospital

Investigators

  • Study Director: Po Chen, MD, Tri-Service General Hospital

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

January 1, 2005

Study Completion (Actual)

January 1, 2007

Study Registration Dates

First Submitted

July 9, 2007

First Submitted That Met QC Criteria

July 9, 2007

First Posted (Estimate)

July 10, 2007

Study Record Updates

Last Update Posted (Estimate)

July 10, 2007

Last Update Submitted That Met QC Criteria

July 9, 2007

Last Verified

July 1, 2007

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • 094-05-0112

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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