Waveform analysis of human retinal and choroidal blood flow with laser Doppler holography.
Journal
Biomedical optics express
ISSN: 2156-7085
Titre abrégé: Biomed Opt Express
Pays: United States
ID NLM: 101540630
Informations de publication
Date de publication:
01 Oct 2019
01 Oct 2019
Historique:
received:
25
04
2019
revised:
14
06
2019
accepted:
27
06
2019
entrez:
25
10
2019
pubmed:
28
10
2019
medline:
28
10
2019
Statut:
epublish
Résumé
Laser Doppler holography was introduced as a full-field imaging technique to measure blood flow in the retina and choroid with an as yet unrivaled temporal resolution. We here investigate separating the different contributions to the power Doppler signal in order to isolate the flow waveforms of vessels in the posterior pole of the human eye. Distinct flow behaviors are found in retinal arteries and veins with seemingly interrelated waveforms. We demonstrate a full field mapping of the local resistivity index, and the possibility to perform unambiguous identification of retinal arteries and veins on the basis of their systolodiastolic variations. Finally we investigate the arterial flow waveforms in the retina and choroid and find synchronous and similar waveforms, although with a lower pulsatility in choroidal arteries. This work demonstrates the potential held by laser Doppler holography to study ocular hemodynamics in healthy and diseased eyes.
Identifiants
pubmed: 31646021
doi: 10.1364/BOE.10.004942
pii: 365034
pmc: PMC6788604
doi:
Types de publication
Journal Article
Langues
eng
Pagination
4942-4963Informations de copyright
© 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.
Déclaration de conflit d'intérêts
The authors declare that there are no conflicts of interest related to this article.
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