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Choroidal Thinning: Alzheimer's Disease and Aging

Cunha, JP; Proença, R; Dias-Santos, A; Melancia, D; Almeida, R; Águas, H; Oliveira Santos, B; Alves, M; Ferreira, J; Papoila, AL; Louro, C

INTRODUCTION: The purpose of this study was to measure and to compare macular choroidal thickness (CT) between patients with mild Alzheimer's disease (AD), patients without AD, and elderly patients. METHODS: CT was measured manually in 13 locations at 500-μm intervals of a horizontal and a vertical section from the fovea. Linear regression models were used to analyze the data. RESULTS: Fifty patients with a dia...


OCT in Alzheimer's Disease: Thinning of the RNFL and Superior Hemiretina

Cunha, JP; Proença, R; Dias-Santos, A; Almeida, R; Águas, H; Alves, M; Papoila, AL; Louro, C; Castanheira-Dinis, A

BACKGROUND: Peripapillary retinal nerve fiber layer (pRNFL) and internal macular layer thinning have been demonstrated in Alzheimer's disease (AD) with optical coherence tomography (OCT) studies. The purpose of this study is to compare the pRNFL thickness and overall retinal thickness (RT) in AD patients with non-AD patients, using spectral domain optical coherence tomography (SD-OCT) and determine the sectors ...


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