Handheld Retinal Oximetry in Healthy Young Adults

Translational Vision Science & Technology
Wouter B VehmeijerNicoline E Schalij-Delfos

Abstract

The objective of this study was to measure the relative retinal oxygen saturation with a prototype, mobile handheld oximeter in upright and supine position and to compare these measurements to the gold standard Oxymap T1 retinal oximeter in upright position. A handheld oximeter is needed for measurements of infants with retinopathy of prematurity as well as acutely injured and bedridden adults. Healthy volunteers (age 18-35) were recruited at the Leiden University Medical Center. Retinal images were acquired with the handheld oximeter and the Oxymap T1. Both cameras are dual-wavelength oximeters and acquire images with wavelengths of 570 and 600 nm. Retinal oxygen saturation values were determined for both the handheld camera and the Oxymap T1. Twenty-one subjects (age 25 ± 2 years) were included. In upright position, the oxygen saturation for the arterioles was 92.2% to 4.9% vs. 95.5% ± 4.2% and for the venules 57.9% ± 10.2% vs. 57.7% ± 6.4% for the handheld camera and Oxymap T1, respectively. The oxygen saturation was higher in the arterioles than the venules for both cameras (P < 0.05). In supine position, measured with the handheld oximeter, the oxygen saturation in the arterioles was 92.3% ± 5.8% and 59.2% ± 6.1% in the ve...Continue Reading

References

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Jan 18, 2013·Acta Ophthalmologica·Evelien VandewalleIngeborg Stalmans
Jan 10, 2014·The British Journal of Ophthalmology·Olof Birna OlafsdottirIngeborg Stalmans
Jan 23, 2014·Acta Ophthalmologica·Asbjorg GeirsdottirEinar Stefánsson
Apr 29, 2014·Acta Ophthalmologica·Thor EysteinssonEinar Stefánsson
Sep 23, 2014·Translational Vision Science & Technology·James Beach
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Oct 11, 2014·Investigative Ophthalmology & Visual Science·WanFen YipCarol Y Cheung
Feb 4, 2016·PloS One·Wouter B VehmeijerEinar Stefánsson

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Citations

May 19, 2021·Translational Vision Science & Technology·Anupam K GargDaniel L Chao
Mar 3, 2021·Acta Ophthalmologica·Wouter B VehmeijerNicoline E Schalij-Delfos

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Software Mentioned

Oxymap
Oxymap Analyzer
SPSS
Oxymap Analysis

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