Journal
KIDNEY INTERNATIONAL
Volume 98, Issue 2, Pages 323-342Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.kint.2020.01.039
Keywords
chronic kidney disease; hypertension; imaging; microcirculation; ocular; proteinuria
Categories
Funding
- Medical Research Council Clinical Research Training Fellowship
- NIHR Clinician Scientist Fellowship
- British Heart Foundation Intermediate Clinical Research Fellowship
- MRC [MR/R017840/1] Funding Source: UKRI
- UKRI [MR/T019050/1] Funding Source: UKRI
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Chronic kidney disease (CKD) is common, with hypertension and diabetes mellitus acting as major risk factors for its development. Cardiovascular disease is the leading cause of death worldwide and the most frequent end point of CKD. There is an urgent need for more precise methods to identify patients at risk of CKD and cardiovascular disease. Alterations in microvascular structure and function contribute to the development of hypertension, diabetes, CKD, and their associated cardiovascular disease. Homology between the eye and the kidney suggests that noninvasive imaging of the retinal vessels can detect these microvascular alterations to improve targeting of at-risk patients. Retinal vessel-derived metrics predict incident hypertension, diabetes, CKD, and cardiovascular disease and add to the current renal and cardiovascular risk stratification tools. The advent of optical coherence tomography (OCT) has transformed retinal imaging by capturing the chorioretinal microcirculation and its dependent tissue with near-histological resolution. In hypertension, diabetes, and CKD, OCT has revealed vessel remodeling and chorioretinal thinning. Clinical and preclinical OCT has linked retinal microvascular pathology to circulating and histological markers of injury in the kidney. The advent of OCT angiography allows contrast-free visualization of intraretinal capillary networks to potentially detect early incipient microvascular disease. Combining OCT's deep imaging with the analytical power of deep learning represents the next frontier in defining what the eye can reveal about the kidney and broader cardiovascular health.
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