New method for early diagnosis of Alzheimer's disease from the retina
American researchers have recently discovered that a new, non-invasive imaging device can show signs of Alzheimer's disease in seconds. Researchers at the Duke University Eye Center in the United States have found that small blood vessels in the posterior retina of the eye of Alzheimer's disease change. Through this device called Optical Coherence Tomography and Angiography (OCTA), doctors can observe the smallest blood vessels in the back of the eyeball that are thinner than the hair, helping early diagnosis of Alzheimer's disease. This finding is considered by the industry to be an important achievement in the early diagnosis of Alzheimer's disease, and the paper was published in the new issue of the Journal of Ophthalmology Retina in the American Academy of Ophthalmology. The retina is an extension of the brain, and the neurons that make it have many similarities to brain neurons. Researchers believe that changes in retinal blood vessels may reflect changes in the blood vessels of the brain, providing a window into the progression of Alzheimer's disease. The researchers compared the retinas of 39 Alzheimer's patients, 37 patients with mild cognitive impairment, and 133 normal cognitive subjects using OCTA equipment. It was found that in the patients with Alzheimer's disease, the small blood vessels in the posterior part of the eye were missing, and the inner layer of the retina was thinner than other people. Alzheimer's disease is a common form of dementia. Symptoms include memory disorders, aphasia, and changes in personality and behavior. There are currently no effective therapies. In the field of diagnosis, brain scans are expensive and spinal puncture is risky. The current common method is to test memory or observe behavioral changes, but the course of disease has often developed to a certain stage when diagnosed. Sharon Ficklet, author of the paper and a professor at the Duke University Eye Center, said there is a huge need for early diagnosis of Alzheimer's disease. Existing brain scanning, spinal puncture and other techniques are unlikely to screen a large number of patients, and changes in vascular density in the retina can reflect changes in the brain's tiny blood vessels. The research team is still continuing to explore, if significant changes in blood vessels in the retina can be detected before cognitive changes caused by Alzheimer's disease, it will be a significant advance. (Reporter Tan Jingjing) Source: Xinhuanet Video Door Phone,Intercom System For Multi Apartment,Ip Video Door Phone System,Video Door Phone Made In China,Video Intercom Zhuhai Mingke Electronics Technology Co., Ltd , https://www.zhmkdz-electronics.com