# Convergence Insufficiency Treatment Trial (CITT)

> **NCT00338611** · PHASE3 · UNKNOWN · sponsor: **National Eye Institute (NEI)** · enrollment: 221 (actual)

## Conditions studied

- Convergence Insufficiency
- Binocular Vision Disorder

## Interventions

- **BEHAVIORAL:** 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

## Key facts

- **NCT ID:** NCT00338611
- **Lead sponsor:** National Eye Institute (NEI)
- **Sponsor class:** NIH
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** UNKNOWN
- **Start date:** 2005-07
- **Primary completion:** 2008-09
- **Final completion:** 2009-09
- **Target enrollment:** 221 (ACTUAL)
- **Last updated:** 2010-03-25


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00338611

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00338611, "Convergence Insufficiency Treatment Trial (CITT)". Retrieved via AI Analytics 2026-07-17 from https://api.ai-analytics.org/clinical/NCT00338611. Licensed CC0.

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