Geographic atrophy (GA) is an advanced form of dry AMD that causes irreversible vision loss.
and forms areas of dead retinal cells called lesions. Sometimes the regions of atrophy can look like a map, hence the term geographic atrophy. Over time, the atrophic lesions grow and spread across the retina. When they reach the fovea—the area of the eye responsible for sharp, central vision—permanent vision loss (blindness) occurs.
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Above are the different parts within the eye.
The retina, macula, and fovea are impacted by GA.
Image is for illustrative purposes only and should not be taken as medical advice.
Lesions begin to grow where retinal cells have died.
Image is for illustrative purposes only and should not be taken as medical advice.
Over time, the lesions grow larger and get closer to the fovea.
Image is for illustrative purposes only and should not be taken as medical advice.
When GA lesions reach the fovea, it can lead to a significant loss of central vision and, eventually, legal blindness.
Image is for illustrative purposes only and should not be taken as medical advice.
AMD=age-related macular degeneration.
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