NCT01931904Active, not recruiting
Eye Pressure Lowering Surgery
Observational Study of Ocular Blood Flow Pre- and Post- Glaucoma Surgery Using Functional and Structural Optical Coherence Tomography
Source: ClinicalTrials.gov · Last updated 2 Sept 2026
Brief summary (registry, in English)
The purpose of this study is to determine if lowering the pressure inside the eye improves blood flow to the eye.
- Status (registry)
- Active, not recruiting
- Study type
- Observational
- Enrollment
- 21 (estimated)
- First submitted
- 27 Aug 2013
- Start date
- 1 Feb 2014
- Primary completion date
- 31 May 2031
- Lead sponsor
- Oregon Health and Science University
- Diseases
- Glaucoma
- NCT number
- NCT01931904
What you commit to
- Study type: Observational
- Planned participants: 21
- From 1 Feb 2014 to the primary completion date, 31 May 2031
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Previous vision correction surgery such as Laser-Assisted in situ Keratomileusis (LASIK) or Photorefractive Keratectomy (PRK)
- Previous intraocular surgery except for uncomplicated cataract extraction with posterior chamber intraocular lens implantation
Other illness
- History of heart failure, myocardial infarction, transient ischemic attack or stroke
- Other diseases that may cause VF loss or optic disc abnormalities
- Life-threatening or debilitating illness making it unlikely patient will successfully complete the study.
Age
- Age \< 18 or \>85 years
Other
- Best-corrected visual acuity less than 20/40
- Refractive error of \> +3.00 D or \< -7.00 D
- Diabetic retinopathy
- Inability to clinically view or photograph the optic discs due to media opacity or poorly dilating pupil
- Inability to perform reliably on automated VF testing
- Refusal of informed consent or of commitment to the full length of the study
Who the study is looking for
- Subjects diagnosed with perimetric open angle glaucoma or chronic angle closure glaucoma.
- Subjects scheduled to undergo trabeculectomy or tube shunt surgery
Age in the registry: 18 years to 85 years · Sex: All · Does not accept healthy volunteers
Sites (1)
Sites in registry order. Save your city in your profile to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| OHSU Coordinator of this site? Confirm its status | Portland | United States | Unknown status |
This page is information, not medical advice. Discuss any trial with your doctor.