N/A
Completed N=7
Effect of Cosopt Versus Combigan on Retinal Vascular Autoregulation in Primary Open Angle Glaucoma (POAG)
Source: ClinicalTrials.gov NCT00824824 ↗Enrolled (actual)
7
Serious AEs
0.0%
Results posted
Oct 2016
Primary outcomePrimary: Presence of Retinal Vascular Dysregulation (RVD) — 7; 4 Participants
Summary
We have completed a study in which we examined the response of the retinal circulation to changes in posture from sitting to lying down in patients with primary open angle glaucoma (POAG). This alteration in position produces changes in the local blood pressure at the entrance to the retinal vasculature. In a healthy retina, the vasculature adapts by dilating and constricting in order to maintain a steady blood flow rate. In an eye with POAG, this often does not occur. As a result, there are large fluctuations in blood flow which may produce the retinal neuronal damage associated with glaucoma.
The purpose of this study is to demonstrate that topical anti-glaucoma treatments with agents that have vasoactive as well as IOP-lowering effects can have a beneficial effect on maintaining a steady retinal blood flow rate even when there are changes in local blood pressure.
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Presence of Retinal Vascular Dysregulation (RVD) |
7; 4 | — |
Eligibility Criteria
Inclusion Criteria
- POAG
- Age 40 to 80 years
- Untreated IOP greater than 21 mm Hg
Exclusion Criteria
- More than two IOP lowering medications
- Exfoliation or pigment dispersion syndrome
- Diabetic retinopathy
- History of ocular surgery
Data sourced from ClinicalTrials.gov (NCT00824824). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication. Informational only — not medical advice.