Evidence map›Paper›PMID 25298774›Full record

ArticleDementia and geriatric cognitive disorders extra2014

Retinal vascular fractals and cognitive impairment.

Yi-Ting Ong, Saima Hilal, Carol Yim-Lui Cheung, Xin Xu, Christopher Chen, Narayanaswamy Venketasubramanian, Tien Yin Wong, Mohammad Kamran Ikram

Abstract read
In one paragraph

Article in Dementia and geriatric cognitive disorders extra, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 3 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

33 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
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  4. Article
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  6. Alzheimer's disease pathophysiology in the Retina.Progress in retinal and eye research · 2024
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  10. Potential Retinal Biomarkers in Alzheimer's Disease.International journal of molecular sciences · 2023
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Yi-Ting OngDepartment of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore ; Department of NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore ; Department of Singapore Eye Research Institute, Singapore National Eye Center, Singapore.
Saima HilalDepartment of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore ; Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore ; Department of Memory, Aging and Cognition Center, National University Health System, Singapore.
Carol Yim-Lui CheungDepartment of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore ; Department of Singapore Eye Research Institute, Singapore National Eye Center, Singapore ; Department of Office of Clinical Sciences, Duke-NUS Graduate Medical School, Singapore.
Xin XuDepartment of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore ; Department of Memory, Aging and Cognition Center, National University Health System, Singapore.
Christopher ChenDepartment of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore ; Department of Memory, Aging and Cognition Center, National University Health System, Singapore.
Narayanaswamy VenketasubramanianDepartment of Neuroscience Clinic, Raffles Hospital, Singapore.
Tien Yin WongDepartment of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore ; Department of Singapore Eye Research Institute, Singapore National Eye Center, Singapore ; Department of Office of Clinical Sciences, Duke-NUS Graduate Medical School, Singapore.
Mohammad Kamran IkramDepartment of Singapore Eye Research Institute, Singapore National Eye Center, Singapore ; Department of Memory, Aging and Cognition Center, National University Health System, Singapore ; Department of Office of Clinical Sciences, Duke-NUS Graduate Medical School, Singapore.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundRetinal microvascular network changes have been found in patients with age-related brain diseases such as stroke and dementia including Alzheimer's disease. We examine whether retinal microvascular network changes are also present in preclinical stages of dementia.

methodsThis is a cross-sectional study of 300 Chinese participants (age: ≥60 years) from the ongoing Epidemiology of Dementia in Singapore study who underwent detailed clinical examinations including retinal photography, brain imaging and neuropsychological testing. Retinal vascular parameters were assessed from optic disc-centered photographs using a semiautomated program. A comprehensive neuropsychological battery was administered, and cognitive function was summarized as composite and domain-specific Z-scores. Cognitive impairment no dementia (CIND) and dementia were diagnosed according to standard diagnostic criteria.

resultsAmong 268 eligible nondemented participants, 78 subjects were categorized as CIND-mild and 69 as CIND-moderate. In multivariable adjusted models, reduced retinal arteriolar and venular fractal dimensions were associated with an increased risk of CIND-mild and CIND-moderate. Reduced fractal dimensions were associated with poorer cognitive performance globally and in the specific domains of verbal memory, visuoconstruction and visuomotor speed.

conclusionA sparser retinal microvascular network, represented by reduced arteriolar and venular fractal dimensions, was associated with cognitive impairment, suggesting that early microvascular damage may be present in preclinical stages of dementia.

Indexed as

CognitionCognitive impairmentFractal dimensionMicrovasculatureRetina

Identifiers

PMID25298774
PMCPMC4176466

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.