Next-generation optical biosensors for ultra-early detection of Alzheimer's and Parkinson's diseases: Recent advances, challenges, and future perspectives.
Alzheimer's disease (AD) and Parkinson's disease (PD) are considered among the most difficult neurodegenerative diseases because they are progressive, and there are no reliable tools to make early diagnoses. Traditional diagnostic approaches, such as neuroimaging and CSF analysis, are not ideal for rapid clinical scree...