Convergence Insufficiency Treatment Trial (CITT)

Status unconfirmed · Phase 3 · Has a placebo group

Conditions studied: Convergence Insufficiency, Binocular Vision Disorder

In brief

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 than placebo treatment, and whether there are differences between the three treatments in improving subject symptoms and signs. * To evaluate whether improvements in outcome measures are still present after one year of observation.

Key facts

Study ID

NCT00338611

Run by

National Eye Institute (NEI)

People needed

221

Starts

2005-07-01

Expected to finish

2009-09-01

Last updated by the study team

2010-03-25

Who can join

Age: 9 and older, up to 18. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• 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

You may not qualify if…

• 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

Where it is running

• University of Alabama at Birmingham School of Optometry — Birmingham, Alabama, United States
• Southern California College of Optometry — Fullerton, California, United States
• Ratner Children's Eye Center — La Jolla, California, United States
• NOVA Southeastern University College of Optometry — Fort Lauderdale, Florida, United States
• Bascom Palmer Eye Institute — Miami, Florida, United States
• Mayo Clinic — Rochester, Minnesota, United States
• State University of New York College of Optometry — New York, New York, United States
• The Ohio State University College of Optometry — Columbus, Ohio, United States
• Pennsylvania College of Optometry — Philadelphia, Pennsylvania, United States

Full record on ClinicalTrials.gov

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