Convergence Insufficiency Treatment Trial (CITT)
Public ClinicalTrials.gov record NCT00338611. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
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.
Study identification
- NCT ID
- NCT00338611
- Recruitment status
- Not listed
- Study type
- Interventional
- Phase
- Phase 3
- Enrollment
- 221 participants
Conditions and interventions
Interventions
- Home-based Pencil Push-Up Therapy Behavioral
- Home-based Pencil Push-ups with Computer Vision Therapy/Orthoptics Behavioral
- Office-based Vision Therapy/Orthoptics Behavioral
- Placebo Office-based Vision Therapy/Orthoptics Behavioral
Behavioral
Eligibility (public fields only)
- Age range
- 9 Years to 18 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Jun 30, 2005
- Primary completion
- Aug 31, 2008
- Completion
- Aug 31, 2009
- Last update posted
- Mar 24, 2010
2005 – 2009
United States locations
- U.S. sites
- 9
- U.S. states
- 7
- U.S. cities
- 9
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| University of Alabama at Birmingham School of Optometry | Birmingham | Alabama | 35294 | — |
| Southern California College of Optometry | Fullerton | California | 92093 | — |
| Ratner Children's Eye Center | La Jolla | California | 92093 | — |
| NOVA Southeastern University College of Optometry | Fort Lauderdale | Florida | 33328 | — |
| Bascom Palmer Eye Institute | Miami | Florida | 33136 | — |
| Mayo Clinic | Rochester | Minnesota | 55905 | — |
| State University of New York College of Optometry | New York | New York | 10036 | — |
| The Ohio State University College of Optometry | Columbus | Ohio | 43210 | — |
| Pennsylvania College of Optometry | Philadelphia | Pennsylvania | 19141 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT00338611, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Mar 24, 2010 · Synced Sep 6, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT00338611 live on ClinicalTrials.gov.