Status:
UNKNOWN
Convergence Insufficiency Treatment Trial (CITT)
Lead Sponsor:
National Eye Institute (NEI)
Conditions:
Convergence Insufficiency
Binocular Vision Disorder
Eligibility:
All Genders
9-18 years
Phase:
PHASE3
Brief Summary
The purposes of the CITT are: * To determine whether Home-based Pencil Push-up therapy, Home-based Pencil Push-ups with Computer Vision Therapy/Orthoptics or Office-based VT/Orthoptics more effective...
Detailed Description
Convergence insufficiency is a prevalent and distinct binocular vision disorder. Typical symptoms include double vision, eyestrain, headaches, and blurred vision while reading. It affects approximatel...
Eligibility Criteria
Inclusion
- Children between the ages of 9 and 17 years with symptomatic convergence insufficiency
- Exophoria at near at least 4Δ greater than at far
- Insufficient positive fusional convergence at near
- A receded near point of convergence of ≥6 cm break
- CI Symptom Survey score ≥16
Exclusion
- Previous treatment with office-based vision therapy/orthoptics or pencil push-ups
- Systemic diseases known to affect accommodation, vergence and ocular motility
- Developmental disability, mental retardation, attention deficit hyperactivity disorder (ADHD), or learning disability diagnosis that in the investigator's discretion would interfere with treatment
Key Trial Info
Start Date :
July 1 2005
Trial Type :
INTERVENTIONAL
Allocation :
ACTUAL
End Date :
September 1 2009
Estimated Enrollment :
221 Patients enrolled
Trial Details
Trial ID
NCT00338611
Start Date
July 1 2005
End Date
September 1 2009
Last Update
March 25 2010
Active Locations (9)
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1
University of Alabama at Birmingham School of Optometry
Birmingham, Alabama, United States, 35294
2
Southern California College of Optometry
Fullerton, California, United States, 92093
3
Ratner Children's Eye Center
La Jolla, California, United States, 92093
4
NOVA Southeastern University College of Optometry
Fort Lauderdale, Florida, United States, 33328