Earlier diagnosis of Alzheimer's disease by dynamic light scattering spectroscopy

Dynamic light scattering (DLS) spectroscopy measures changes in the Brownian movement of particles at the molecular level. Since the retina of the eye is a neural tissue and an outgrowth of the brain, a clinical instrument was developed capable of making DLS measurements from the retina in patients with mild cognitive impairment undergoing positron emission tomography nuclide imaging for the presence of cerebral amyloid.