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

This study is currently recruiting participants. (see Contacts and Locations)
Verified November 2014 by Singapore National Eye Centre
Sponsor:
Information provided by (Responsible Party):
Audrey Chia Wei-Lin, Singapore National Eye Centre
ClinicalTrials.gov Identifier:
NCT01267500
First received: December 27, 2010
Last updated: November 18, 2014
Last verified: November 2014
  Purpose

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


Condition Intervention Phase
Intermittent Exotropia
Procedure: Non surgical therapy
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Randomized Study of Non-surgical Treatment Versus Observation in Asian Children With Intermittent Exotropia

Resource links provided by NLM:


Further study details as provided by Singapore National Eye Centre:

Primary Outcome Measures:
  • Control of strabismus [ Time Frame: 1 year ] [ Designated as safety issue: No ]

Estimated Enrollment: 300
Study Start Date: October 2010
Estimated Study Completion Date: October 2016
Estimated Primary Completion Date: October 2016 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Non-surgical therapy
patching or fusion exercises
Procedure: Non surgical therapy
patching or fusion exercises

  Eligibility

Ages Eligible for Study:   3 Years to 12 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes
Criteria

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.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01267500

Contacts
Contact: Audrey Chia, FRANZCO audrey.chia.w.l@snec.com.sg

Locations
Singapore
SIngapore National Eye Centre Recruiting
SIngapore, Singapore
Contact: Audrey Chia       audrey.chia.w.l@snec.com.sg   
Sub-Investigator: sonal fazdavandi         
Sub-Investigator: Boon Long Quah         
Sub-Investigator: Yvonne Ling         
Sub-Investigator: Lam Pin Min         
Sponsors and Collaborators
Singapore National Eye Centre
Investigators
Principal Investigator: audrey chia Singapore National Eye Center
  More Information

No publications provided

Responsible Party: Audrey Chia Wei-Lin, Senior Consultant, Singapore National Eye Centre
ClinicalTrials.gov Identifier: NCT01267500     History of Changes
Other Study ID Numbers: R765/49/2010
Study First Received: December 27, 2010
Last Updated: November 18, 2014
Health Authority: Singapore: Singhealth

Additional relevant MeSH terms:
Exotropia
Cranial Nerve Diseases
Eye Diseases
Nervous System Diseases
Ocular Motility Disorders
Strabismus

ClinicalTrials.gov processed this record on November 25, 2014