There is no simple way to detect Alzheimer's. But now, in a new study, researchers have found that eye conditions provide new lens screening for the disease.
A study of 3,877 randomly selected patients found a significant link between three degenerative eye diseases - age-related macular degeneration, diabetic retinopathy and glaucoma - and Alzheimer' disease.
The results offer physicians a new way to detect those at a higher risk of this disorder, which causes memory loss and other symptoms of cognitive decline.
"We don't mean people with these eye conditions will get Alzheimer's disease. The main message from this study is that ophthalmologists should be more aware of the risks of developing dementia for people with these eye conditions and primary care doctors seeing patients with these eye conditions might be more careful on checking on possible dementia or memory loss," said lead researcher Dr. Cecilia Lee at the UW School of Medicine
The participants in the study were aged 65 and older and did not have Alzheimer's disease at the time of enrollment. Over the five-year study, 792 cases of Alzheimer's disease were diagnosed by a committee of dementia experts. Patients with age-related macular degeneration, diabetic retinopathy, or glaucoma were at 40 percent to 50 percent greater risk of developing Alzheimer's disease compared to similar people without these eye conditions. Cataract diagnosis was not an Alzheimer's disease risk factor.