It has been discovered recently that the progress of Alzheimer’s in the brain also happens in the eye, which is actually a direct extension of the brain. Amyloid beta proteins, which is found to be a biomarker for the disease, can be detected and measured in the eye even before the disease shows its symptoms. This gives hope that early detection leads to preventive measures and treatment.
The device developed is an interior laser ophthalmoscope. Since the formation of amyloid beta proteins in the eye resemble a cataract, a special method was devised. The eye is injected with fluorescent drops that react to the amyloid beta proteins, and glows under infrared lights.
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