1. Research progress of optical coherence tomography and angiography in the diagnosis of Alzheimer's disease

    Research progress of optical coherence tomography and angiography in the diagnosis of Alzheimer's disease

    Alzheimer's disease(AD)is a progressive and irreversible neurological disease characterized by changes in neurons and blood vessels of the brain. Its etiology is unknown, and there is no feasible non-invasive technique for early diagnosis. Because the retina and the central nervous system have similar embryonic origins and physiological characteristics, an ophthalmic examination may provide a simple and non-invasive diagnostic method. Optical coherence tomography(OCT)can accurately measure the thickness of various tissue layers of the retina to assess degenerative changes of the retina. Optical coherence tomography angiography(OCTA)can provide high-resolution three-dimensional imaging, which can more directly detect ...

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