Study of Non-surgical Treatment Versus Observation in Asian Children With Intermittent Exotropia

March 15, 2023 updated by: Audrey Chia Wei-Lin, Singapore National Eye Centre

Randomized Study of Non-surgical Treatment Versus Observation in Asian Children With Intermittent Exotropia

Non-surgical treatment (ie. patching or fusion exercises) of intermittent exotropia may help in increasing control of strabismus

Study Overview

Status

Terminated

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

60

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Singapore
      • SIngapore, Singapore
        • Singapore National Eye Centre

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 12 years (Child)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  1. Age 3 to 12 years (inclusive)
  2. IXT for distance or constant IXT for distance and either IXT or exophoria for near
  3. IXT size of > 10PD
  4. Visual acuity in worse eye of at least 0.3 logMar (Snellen 6/12)
  5. Visual acuity of no greater than 2 lines between eyes
  6. Parents or guardian willing to accept randomization, and to continue with observation or treatment for at least 6-12 months, unless deterioration of strabismus or fall in best corrected visual acuity of worse than 0.3logMar (Snellen 6/12) in either eye
  7. Investigator willing to observe IXT untreated for at least 1 year

Exclusion Criteria:

  1. Previous non-surgical treatment for IXT, or patch treatment for amblyopia within the last year
  2. Prior strabismus, intraocular or refractive surgery or botulinium injection
  3. Surgery planned within the next year
  4. Prematurity (birth weight < 1500g, gestational age < 34 weeks), systemic illness (eg. cerebral palsy), syndrome (including craniosynostosis) or learning disability
  5. Any ocular abnormality (cornea, lens or central retina); nystagmus or conditions that limit eye movements.

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: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Non-surgical therapy
patching or fusion exercises
Procedure: Non surgical therapy
patching or fusion exercises

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Control of strabismus
Time Frame: 1 year
1 year

Collaborators and Investigators

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

Sponsor

Singapore National Eye Centre

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 (Actual)

October 1, 2010

Primary Completion (Actual)

October 1, 2017

Study Completion (Actual)

October 1, 2017

Study Registration Dates

First Submitted

December 27, 2010

First Submitted That Met QC Criteria

December 27, 2010

First Posted (Estimate)

December 28, 2010

Study Record Updates

Last Update Posted (Actual)

March 20, 2023

Last Update Submitted That Met QC Criteria

March 15, 2023

Last Verified

March 1, 2023

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • R765/49/2010

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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