Abstract:
:Quantitatively determining physiological parameters at a microscopic level in the retina furthers the understanding of the molecular pathways of blinding diseases, such as diabetic retinopathy and glaucoma. An essential parameter, which has yet to be quantified noninvasively, is the retinal oxygen metabolic rate (rMRO2). Quantifying rMRO2 is challenging because two parameters, the blood flow rate and hemoglobin oxygen saturation (sO2), must be measured together. We combined photoacoustic ophthalmoscopy (PAOM) with spectral domain-optical coherence tomography (SD-OCT) to tackle this challenge, in which PAOM measured the sO2 and SD-OCT mapped the blood flow rate. We tested the integrated system on normal wild-type rats, in which the measured rMRO2 was 297.86 ± 70.23 nl/minute. This quantitative method may shed new light on both fundamental research and clinical care in ophthalmology in the future.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Song W,Wei Q,Liu W,Liu T,Yi J,Sheibani N,Fawzi AA,Linsenmeier RA,Jiao S,Zhang HFdoi
10.1038/srep06525subject
Has Abstractpub_date
2014-10-06 00:00:00pages
6525issn
2045-2322pii
srep06525journal_volume
4pub_type
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