Short Term and Day to Day Reproducibility of Reflectometric Measurement of Retinal Oxygen Saturation in Healthy Subjects
Adequate perfusion and oxygenation is essential for the function of the inner retina. Although this is a well known fact, measurement of oxygen saturation in the eye is still a delicate and not fully explored task. However, recently a new instrument for the non-invasive measurement of retinal vessel oxygen saturation has been introduced. Unfortunately, no data about reproducibility in humans is yet available for this instrument. Consequently, the current study seeks to evaluate the short term and day to day reproducibility of retinal vessel oxygenation in healthy volunteers.
20 healthy volunteers will be included and oxygen saturation of retinal vessels will be determined. The reproducibility of the results will be tested by repeated measurements and the collected data will be independently analyzed by two observers.
|Ocular Physiology||Device: Measurement of oxygen saturation of retinal vessels with optical reflectometer|
|Study Design:||Time Perspective: Prospective|
|Official Title:||Short Term and Day to Day Reproducibility of Reflectometric Measurement of Retinal Oxygen Saturation in Healthy Subjects|
- Coefficients of variation of oxygen measurement [ Time Frame: 5 measurements on both study days ]
|Study Start Date:||August 2009|
|Estimated Study Completion Date:||December 2009|
|Estimated Primary Completion Date:||October 2009 (Final data collection date for primary outcome measure)|
Device: Measurement of oxygen saturation of retinal vessels with optical reflectometer
5 repeated measurements on both study days
Please refer to this study by its ClinicalTrials.gov identifier: NCT00991900
|Medical University of Vienna|
|Vienna, Austria, 1090|