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Using Retinal Imaging to Study Dementia

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Published on: November 6, 2017

Retinal vessel density correlates with cognitive function in older adults.

Min Fang¹, Keri Strand², Juan Zhang³

¹Shenzhen Key Laboratory of Ophthalmology, Shenzhen Eye Hospital, Jinan University, Shenzhen, China; Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL, USA.

Experimental Gerontology

|June 6, 2021

Summary

Retinal vessel density is linked to cognitive function in healthy older adults. This study found a correlation between superficial vascular plexus density and Montreal Cognitive Assessment scores, suggesting a potential biomarker for cognitive health.

Keywords:

Cognition Fitness Older adults Retinal microvasculature

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Evaluation of Capillary and Other Vessel Contribution to Macular Perfusion Density Measured with Optical Coherence Tomography Angiography

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Published on: February 18, 2022

Retinal Vascular Reactivity as Assessed by Optical Coherence Tomography Angiography

Retinal Vascular Reactivity as Assessed by Optical Coherence Tomography Angiography

Published on: March 26, 2020

Area of Science:

Ophthalmology and Neuroscience
Gerontology
Vascular Biology

Background:

Cognitive decline in aging is a growing concern.
Retinal microvasculature changes may reflect systemic vascular health and brain health.
Previous research has explored links between ocular health and cognition, but specific associations with retinal vessel density in cognitively normal older adults require further investigation.

Purpose of the Study:

To investigate the relationship between retinal microvascular density and cognitive function in healthy older adults.
To explore the association between retinal microvascular density and physical fitness in this population.
To determine if retinal vessel density is a potential indicator of cognitive status in aging.

Main Methods:

Twenty cognitively normal older adults (mean age 70.3 years) underwent optical coherence tomography angiography to measure retinal vessel densities (RVN, SVP, DVP).
Cognitive function was assessed using the Mini-Mental State Examination (MMSE) and Montreal Cognitive Assessment (MoCA).
Physical performance was evaluated using the YMCA cycle ergometer test (TW-YMCA), and Spearman correlations were computed.

Main Results:

A significant positive correlation was found between superficial vascular plexus (SVP) vessel density and MoCA scores (r_s = 0.53, P = 0.02).
No significant correlations were observed between RVN or DVP density and MoCA scores.
Retinal microvascular densities and cognitive function (MMSE) were not significantly related to physical performance (TW-YMCA).

Conclusions:

This study provides novel evidence of an association between retinal superficial vascular plexus density and cognitive function (MoCA) in healthy older adults.
Retinal microvascular density, particularly SVP, may serve as a potential non-invasive biomarker for cognitive health in aging populations.
Further research is warranted to explore the clinical implications of these findings for early detection and management of cognitive changes.