- Using an ultrasensitive scanning technique, researchers can detect signs of Alzheimer's disease in the tiny blood vessels at the back of the eye, according to a new report.
The findings were reported in Ophthalmology Retina, a publication of the American Academy of Ophthalmology. The new findings couldn't have happened without a new scanning technology, called optical coherence tomography angiography , that allows users to see in fine detail the structure of the back part of the eye. "With previous technology you were able to measure only the larger blood vessels in the back of the eye," Grewal said."Now we can look at blood vessels that are at the level of capillaries in the different layers of the retina.
In the past, some small studies have suggested that there would be differences"in both neuronal and microvascular retinal measures between those with and those without Alzheimer's disease," said Alison Abraham, an associate professor of ophthalmology and director of the Wilmer Eye Institute Biostatistics Center at the Johns Hopkins School of Medicine.
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