ArticleAlzheimer's & dementia : the journal of the Alzheimer's Association2026
Retinal microvascular changes are related to indicators of glymphatic dysfunction and small vessel disease in frontotemporal dementia.
Article in Alzheimer's & dementia : the journal of the Alzheimer's Association, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
introductionRetinal vascular alterations have been associated with cerebral small vessel disease (SVD) in frontotemporal dementia (FTD), but their relationship with magnetic resonance imaging (MRI)-derived glymphatic-related diffusion markers remains unclear. We investigated retinal vascular fractal dimension (FD) in relation to SVD, glymphatic-related diffusion metrics, and clinical measures.
methodsThirty-four patients with clinically diagnosed FTD (82.4% behavioral variant FTD) and 34 cognitively unimpaired controls underwent color fundus photography and multimodal MRI. Generalized estimating equations, multivariable regression, and partial Spearman correlations were performed.
resultsFTD showed sparser retinal microvasculature, lower diffusion tensor imaging analysis along the perivascular space (DTI-ALPS), and periventricular diffusivity, and higher SVD burden (all p < 0.05). Sparser retinal microvasculature was associated with reduced DTI-ALPS, lower periventricular diffusivity, greater SVD burden, poorer cognition, and greater disease severity (all p < 0.05). DISCUSSION: Retinal microvascular alterations are related to SVD and glymphatic dysfunction in FTD.
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