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The inter-visit variability of retinal blood flow velocity measurements using retinal function imager (RFI)

BACKGROUND: To determine the inter-visit variability of retinal blood flow velocities (BFVs) using a retinal function imager (RFI) in healthy young subjects. METHODS: Twenty eyes of 20 healthy young subjects were enrolled. RFI imaging was performed to obtain the BFVs in retinal arterioles and venule...

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Autores principales: Deng, Yuqing, Li, Meng, Wang, Gengyuan, Jiang, Hong, Wang, Jianhua, Zhong, Jing, Li, Saiqun, Yuan, Jin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6280444/
https://www.ncbi.nlm.nih.gov/pubmed/30534577
http://dx.doi.org/10.1186/s40662-018-0124-z
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author Deng, Yuqing
Li, Meng
Wang, Gengyuan
Jiang, Hong
Wang, Jianhua
Zhong, Jing
Li, Saiqun
Yuan, Jin
author_facet Deng, Yuqing
Li, Meng
Wang, Gengyuan
Jiang, Hong
Wang, Jianhua
Zhong, Jing
Li, Saiqun
Yuan, Jin
author_sort Deng, Yuqing
collection PubMed
description BACKGROUND: To determine the inter-visit variability of retinal blood flow velocities (BFVs) using a retinal function imager (RFI) in healthy young subjects. METHODS: Twenty eyes of 20 healthy young subjects were enrolled. RFI imaging was performed to obtain the BFVs in retinal arterioles and venules in a field measuring 7.3 × 7.3 mm(2) (setting: 35 degrees) centered on the fovea, and repeated measurements were obtained on two separate days. The inter-visit variability of BFVs was assessed by the concordance correlation coefficient (CCC) and coefficient of variance (CV). RESULTS: At the first visit, the mean BFV was 3.6 ± 0.8 mm/s and 3.0 ± 0.7 mm/s in arterioles and venules, respectively, which were not significantly different from those at the second visit (the BFV of arterioles was 3.5 ± 0.8 mm/s, and the BFV of venules was 3.0 ± 0.7 mm/s, P > 0.05, respectively). The CCC was 0.72 in the BFVs of arterioles and 0.67 in venules, and the CV was 10.8% in the BFVs of arterioles and 11.0% in venules. CONCLUSION: The inter-visit variability using the retinal function imager (RFI) with a large field of view appeared to be good and comparable to previously reported intra-visit and inter-eye variability.
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spelling pubmed-62804442018-12-10 The inter-visit variability of retinal blood flow velocity measurements using retinal function imager (RFI) Deng, Yuqing Li, Meng Wang, Gengyuan Jiang, Hong Wang, Jianhua Zhong, Jing Li, Saiqun Yuan, Jin Eye Vis (Lond) Research BACKGROUND: To determine the inter-visit variability of retinal blood flow velocities (BFVs) using a retinal function imager (RFI) in healthy young subjects. METHODS: Twenty eyes of 20 healthy young subjects were enrolled. RFI imaging was performed to obtain the BFVs in retinal arterioles and venules in a field measuring 7.3 × 7.3 mm(2) (setting: 35 degrees) centered on the fovea, and repeated measurements were obtained on two separate days. The inter-visit variability of BFVs was assessed by the concordance correlation coefficient (CCC) and coefficient of variance (CV). RESULTS: At the first visit, the mean BFV was 3.6 ± 0.8 mm/s and 3.0 ± 0.7 mm/s in arterioles and venules, respectively, which were not significantly different from those at the second visit (the BFV of arterioles was 3.5 ± 0.8 mm/s, and the BFV of venules was 3.0 ± 0.7 mm/s, P > 0.05, respectively). The CCC was 0.72 in the BFVs of arterioles and 0.67 in venules, and the CV was 10.8% in the BFVs of arterioles and 11.0% in venules. CONCLUSION: The inter-visit variability using the retinal function imager (RFI) with a large field of view appeared to be good and comparable to previously reported intra-visit and inter-eye variability. BioMed Central 2018-12-04 /pmc/articles/PMC6280444/ /pubmed/30534577 http://dx.doi.org/10.1186/s40662-018-0124-z Text en © The Author(s). 2018 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
spellingShingle Research
Deng, Yuqing
Li, Meng
Wang, Gengyuan
Jiang, Hong
Wang, Jianhua
Zhong, Jing
Li, Saiqun
Yuan, Jin
The inter-visit variability of retinal blood flow velocity measurements using retinal function imager (RFI)
title The inter-visit variability of retinal blood flow velocity measurements using retinal function imager (RFI)
title_full The inter-visit variability of retinal blood flow velocity measurements using retinal function imager (RFI)
title_fullStr The inter-visit variability of retinal blood flow velocity measurements using retinal function imager (RFI)
title_full_unstemmed The inter-visit variability of retinal blood flow velocity measurements using retinal function imager (RFI)
title_short The inter-visit variability of retinal blood flow velocity measurements using retinal function imager (RFI)
title_sort inter-visit variability of retinal blood flow velocity measurements using retinal function imager (rfi)
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6280444/
https://www.ncbi.nlm.nih.gov/pubmed/30534577
http://dx.doi.org/10.1186/s40662-018-0124-z
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