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Study of the Retinal Vascularization by Laser Doppler Velocimetry Coupled With an Adaptive Optics Camera ( AO-LDV) — AO-LDV  

Glaucoma Clinical Trial

Official title:
Study of the Retinal Vascularization by Laser Doppler Velocimetry Coupled With an Adaptive Optics Camera ( AO-LDV) in Healthy Subject and Subject Affected by Glaucoma or Retinal Venous Occlusion

Clinical Trial Summary

The difficulty to measure blood flow in humans is connected with the necessity of using not invasive, reliable and reproducible techniques.

There is several quantitative approaches to study eye blood flow which do not answer all these specifications. The laser doppler velocimetry allows movement speed measures but not vessel diameter. Optical coherence tomography doppler allows a simultaneous diameter and speed of travel (movement) measures, but presents a limited spatial resolution and thereby not easily reproducible vessel diameter measures.

The investigators propose development of a technique allowing a simultaneous diameter and velocity measure of these vessels.

Clinical Trial Description

The eye blood flow plays a fundamental role in the eye physiology, insuring the metabolic contributions of various eye tissues, in particular those associated with the vision photochemical processes. Eye blood flow changes are involved in the physiopathology of several frequent eye diseases susceptible to lead to blindness (glaucoma,age-related macular degeneration, venous or arterial occlusions). Numerous systematic pathologies can also alter eye blood flow (diabetes, sleep apnea, arterial high blood pressure, inflammation).

The difficulty to measure blood flow in humans is connected with the necessity of using not invasive, reliable and reproducible techniques.

There is several quantitative approaches to study eye blood flow which do not answer all these specifications. The laser doppler velocimetry allows movement speed measures but not vessel diameter. Optical coherence tomography doppler allows a simultaneous diameter and speed of travel (movement) measures, but presents a limited spatial resolution and thereby not easily reproducible vessel diameter measures.

The investigators propose development of a technique allowing a simultaneous diameter and velocity measure of these vessels. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT03525132
Study type Interventional
Source University Hospital, Grenoble
Contact Florent APTEL, PhD
Email faptel@chu-grenoble.fr
Status Recruiting
Phase N/A
Start date September 18, 2015
Completion date September 18, 2020
View Details
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