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Summary of eye and brain biomarkers of AD. APP, amyloid precursor protein; PS1/PS2, presenilin-1 −2, ERG, electroretinography; CSF, cerebrospinal fluid; MRI, magnetic resonance imaging; PET, positron emission tomography; FDG-PET, fluorodeoxyglucose-PET; RNFL, retinal nerve fiber layer; VEP, visual evoked potential.
