One in nine Americans over 65 has Alzheimer’s disease. There is no way to revive dead cells, but if detected early enough, the disease progression can be slowed with treatment. Spinal fluid analysis and PET scans can detect the approaching disease, but are painful and expensive. Company Neurotrack has developed a computerized visual screening test, which requires no language or motor skills, where a camera tracks eye movements while showing images on a monitor. Alzheimer’s patients have a damaged hippocampus and will not show a preference for one image in a pair. This five minute Web-based test can predict Alzheimer’s development three years in advance. This visual screening, along with blood tests, retinal scans, and cognitive tests, are simple ways to detect presymptomatic Alzheimer’s. Doctors would likely use several of these methods to assess the progression of the disease in a patient.
Landhuis, Esther. “Eye-Tracking Test Enters into the Running for an Alzheimer’s Screen.” Health. Scientific American, 20 Jan 2015. Web. 10 Feb 2015.