Primary Tube Versus Trabeculectomy Study
Summary
The registered summary isn't in our current data snapshot. Read it on the ClinicalTrials.gov record ↗. Why? →
Investigators
The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.
- Dale K Heuer, MD
Medical College of Wisconsin
Study Chair
A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.
Sites
16 registered facilities, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.
- University of Toronto
Toronto, Canada
- Moorfields Eye Hospital
London, United Kingdom
- St. Thomas' Hospital
London, United Kingdom
- Queen Mary'S Sidcup Hospital
Sidcup, United Kingdom
- University of California Davis Medical Center
Sacramento, California, United States
- University of Florida
Gainesville, Florida, United States
- Bascom Palmer Eye Institute
Miami, Florida, United States
- Johns Hopkins
Baltimore, Maryland, United States
- St. Louis University
St Louis, Missouri, United States
- New York Eye and Ear Infirmary
New York, New York, United States
- Cincinnati Eye Institute
Cincinnati, Ohio, United States
- University of Oklahoma
Oklahoma City, Oklahoma, United States
- University of Pennsylvania
Philadelphia, Pennsylvania, United States
- Glaucoma Associates of Texas
Dallas, Texas, United States
- University of Texas, Houston
Houston, Texas, United States
- University of Virginia
Charlottesville, Virginia, United States
Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.
Drugs studied
No drug or biological interventions are in our data for this study — it may test a procedure, device or behavioral intervention, or the intervention list isn't in our current snapshot. See the registry record ↗. Why? →
Registration & key dates
Registry attributes as recorded on the ClinicalTrials.gov study record.
- Start
- 1 Apr 2008
- Primary completion
- 1 Apr 2021
- Completion
- 1 Apr 2021
- Last update posted
- 19 Oct 2022
- Registered enrollment
- 242
- Registry id
- NCT00666237
Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 12 Jul 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.