A Randomized Trial of Base-in Prism Reading Glasses Convergence Insufficiency in Children

ClinicalTrials.gov ID: NCT00347581

Public ClinicalTrials.gov record NCT00347581. 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.

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ClinicalTrials.gov public records Last synced May 19, 2026, 8:56 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Randomized Clinical Trial of the Effectiveness of Base-in Prism Reading Glasses Vs. Placebo Reading Glasses for Symptomatic Convergence Insufficiency in Children

Study identification

NCT ID: NCT00347581
Recruitment status: Completed
Study type: Interventional
Phase: Phase 3
Lead sponsor: Pennsylvania College of Optometry; Industry
Enrollment: 72 participants

Conditions and interventions

Conditions

Convergence Insufficiency

Interventions

Base-in prism glasses for reading Procedure
Placebo reading glasses Procedure

Procedure

Eligibility (public fields only)

Age range: 9 Years to 18 Years
Sex: All
Healthy volunteers: Accepts healthy volunteers

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date: Apr 30, 2003
Primary completion: Not listed
Completion: Jul 31, 2004
Last update posted: Jul 3, 2006

2003 – 2004

United States locations

U.S. sites: 10
U.S. states: 8
U.S. cities: 9

Facility	City	State	ZIP	Site status
University of Alabama, Birmingham, College of Optometry	Birmingham	Alabama	35294	—
Southern California College of Optometry	Fullerton	California	92831	—
NOVA College of Optometry	Fort Lauderdale	Florida	33328	—
Bascom Palmer Eye Institute	Miami	Florida	33136	—
Indiana University College of Optometry	Bloomington	Indiana	47405	—
State University of New York, College of Optometry	New York	New York	10036	—
The Ohio State University, Optometry Coordinating Center	Columbus	Ohio	43210	—
The Ohio State University	Columbus	Ohio	43210	—
Eye Institute, Pennsylvania College of Optometry	Philadelphia	Pennsylvania	19141	—
University of Houston, College of Optometry	Houston	Texas	77204	—

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 NCT00347581, 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 Jul 3, 2006 · Synced May 19, 2026

Open the official record

The complete protocol, eligibility criteria, and contact information for NCT00347581 live on ClinicalTrials.gov.

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