Retinal vessel oxygen saturation and vessel diameter in high myopia

2015 ◽  
Vol 35 (5) ◽  
pp. 562-569 ◽  
Author(s):  
Qishan Zheng ◽  
Yao Zong ◽  
Li Li ◽  
Xia Huang ◽  
Leilei Lin ◽  
...  
Keyword(s):  
Oxygen Saturation ◽  
High Myopia ◽  
Retinal Vessel ◽  
Vessel Diameter

Retinal Vessel Oxygen Saturation and Vessel Diameter in Inactive Graves Ophthalmopathy

2017 ◽  
Vol 33 (6) ◽  
pp. 459-465 ◽  
Author(s):  
Xiaonan Yang ◽  
Danping Huang ◽  
Siming Ai ◽  
Xuanwei Liang ◽  
Jing Zhao ◽  
...  
Keyword(s):  
Oxygen Saturation ◽  
Retinal Vessel ◽  
Vessel Diameter ◽  
Graves Ophthalmopathy

scholarly journals Automation improves repeatability of retinal oximetry measurements

PLoS ONE ◽  
2021 ◽  
Vol 16 (12) ◽  
pp. e0260120
Author(s):  
Robert Arnar Karlsson ◽  
Olof Birna Olafsdottir ◽  
Vedis Helgadottir ◽  
Soumaya Belhadj ◽  
Thorunn Scheving Eliasdottir ◽  
...  
Keyword(s):  
Oxygen Saturation ◽  
Intraclass Correlation ◽  
Retinal Vessel ◽  
Vessel Diameter ◽  
Automated Measurements ◽  
Automation Of Measurements ◽  
Image Pairs ◽  
The Right ◽  
Measurement Area ◽  
Retinal Oximetry

Purpose Retinal oximetry is a technique based on spectrophotometry where images are analyzed with software capable of calculating vessel oxygen saturation and vessel diameter. In this study, the effect of automation of measurements of retinal vessel oxygen saturation and vessel diameter is explored. Methods Until now, operators have had to choose each vessel segment to be measured explicitly. A new, automatic version of the software automatically selects the vessels once the operator defines a measurement area. Five operators analyzed image pairs from the right eye of 23 healthy subjects with semiautomated retinal oximetry analysis software, Oxymap Analyzer (v2.5.1), and an automated version (v3.0). Inter- and intra-operator variability was investigated using the intraclass correlation coefficient (ICC) between oxygen saturation measurements of vessel segments in the same area of the retina. Results For semiautomated saturation measurements, the inter-rater ICC was 0.80 for arterioles and venules. For automated saturation measurements, the inter-rater ICC was 0.97 for arterioles and 0.96 for venules. For semiautomated diameter measurements, the inter-rater ICC was 0.71 for arterioles and venules. For automated diameter measurements the inter-rater ICC was 0.97 for arterioles and 0.95 for venules. The inter-rater ICCs were different (p < 0.01) between the semiautomated and automated version in all instances. Conclusion Automated measurements of retinal oximetry values are more repeatable compared to measurements where vessels are selected manually.

Retinal vessel diameter affects oxygen saturation measurements

2010 ◽  
Vol 88 ◽  
pp. 0-0
Author(s):  
SH HARDARSON ◽  
HR BERGVINSSON ◽  
E STEFANSSON
Keyword(s):  
Oxygen Saturation ◽  
Retinal Vessel ◽  
Vessel Diameter ◽  
Retinal Vessel Diameter

Retinal vessel oxygen saturation and vessel diameter in healthy individuals during high‐altitude exposure

2018 ◽  
Vol 97 (3) ◽  
pp. 279-286 ◽  
Author(s):  
Yiquan Yang ◽  
Diya Yang ◽  
Yunxiao Sun ◽  
Yuan Xie ◽  
Zheng Zhang ◽  
...  
Keyword(s):  
Oxygen Saturation ◽  
High Altitude ◽  
Retinal Vessel ◽  
Vessel Diameter ◽  
Healthy Individuals ◽  
Altitude Exposure

scholarly journals Retinal vessel oxygen saturation and vessel diameter in retinitis pigmentosa

2014 ◽  
Vol 92 (5) ◽  
pp. 449-453 ◽  
Author(s):  
Thor Eysteinsson ◽  
Sveinn H. Hardarson ◽  
David Bragason ◽  
Einar Stefánsson
Keyword(s):  
Retinitis Pigmentosa ◽  
Oxygen Saturation ◽  
Retinal Vessel ◽  
Vessel Diameter

scholarly journals Automation improves repeatability of retinal oximetry measurements

2021 ◽  
Author(s):  
Robert Arnar Karlsson ◽  
Olof Birna Olafsdottir ◽  
Soumaya Belhadj ◽  
Vedis Helgadottir ◽  
Thorunn Scheving Eliasdottir ◽  
...  
Keyword(s):  
Oxygen Saturation ◽  
Intraclass Correlation ◽  
Retinal Vessel ◽  
Vessel Diameter ◽  
Automated Measurements ◽  
Automation Of Measurements ◽  
Image Pairs ◽  
The Right ◽  
Measurement Area ◽  
Retinal Oximetry

AbstractPurposeRetinal oximetry is a technique based on spectrophotometry where images are analyzed with software capable of calculating vessel oxygen saturation and vessel diameter. In this study, the effect of automation of measurements of retinal vessel oxygen saturation and vessel diameter is explored.MethodsUntil now, operators have had to choose each vessel segment to be measured explicitly. A new, automatic version of the software automatically selects the vessels once the operator defines a measurement area.Five operators analyzed image pairs from the right eye of 23 healthy subjects with semiautomated retinal oximetry analysis software, Oxymap Analyzer (v2.5.1), and an automated version (v3.0). Inter- and intra-operator variability was investigated using the intraclass correlation coefficient (ICC) between oxygen saturation measurements of vessel segments in the same area of the retina.ResultsFor manual saturation measurements, the inter-rater ICC was 0.80 for arterioles and venules. For automated saturation measurements, the inter-rater ICC was 0.97 for arterioles and 0.96 for venules. For manual diameter measurements, the inter-rater ICC was 0.71 for arterioles and venules. For automated diameter measurements the inter-rater ICC was 0.97 for arterioles and 0.95 for venules. The inter-rater ICCs were different (p < 0.01) between the semiautomated and automated version in all instances.ConclusionAutomated measurements of retinal oximetry values are more repeatable compared to measurements where vessels are selected manually.

Retinal vessel oxygen saturation and vessel diameter in retinitis pigmentosa at various ages

2015 ◽  
Vol 254 (2) ◽  
pp. 243-252 ◽  
Author(s):  
Yao Zong ◽  
Leilei Lin ◽  
Changxian Yi ◽  
Xia Huang ◽  
Yue Fu ◽  
...  
Keyword(s):  
Retinitis Pigmentosa ◽  
Oxygen Saturation ◽  
Retinal Vessel ◽  
Vessel Diameter
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