The eyes reveal Alzheimer's disease. Early signs before it's too late

WASHINGTON (Reuters) – US researchers at the University of California, California, have discovered a biological marker that could help to quickly recognize the risk of Alzheimer's disease.
In the study published in the latest issue of the Journal of Neurobiology on Aging, researchers discovered that measuring students during cognitive testing could be an inexpensive way to help screen individuals at genetic risk. increased Alzheimer's disease before the cognitive decline associated with the disease.

In the study of Alzheimer's disease in recent years, researchers have focused their attention on the major protein amyloid and Tao protein in brain tissue, two factors contributing to the disease, both related to the destruction of neurons, leading to cognitive dysfunction.
The new study focuses on mydriatic responses during cognitive tasks – locus coeruleus function (a group of brainstem neurons involved in regulating the excitation and modulation of cognitive function).
The researchers found that the Tao protein first appeared in the blue position zone and then on the pupil.
According to the researchers, the introduction of Alzheimer's disease often leads to mild cognitive impairment, significant pupil dilation and higher cognitive effort than normal individuals.
Because of this evidence linking the student's response to the region of the brain and Tao protein, measuring the student's response during cognitive testing can be a tool for screening for the disease of Alzheimer's well before the onset of symptoms.
To detect the disease early before the onset of its symptoms and slow down its progress, people whose family has a genetic history can undergo these tests.
Alzheimer's International says the disease affects nearly 50 million people worldwide and that the number of infected people is expected to reach more than 131 million by 2050.