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What causes advanced diabetic retinopathy?

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In advanced cases of diabetic retinopathy, the retina loses its blood supply and grows new, but defective, vessels -- a process called neovascularization. These fragile vessels can bleed and lead to scar tissue or detached retina. That can cause vision loss or even blindness. The new vessels can also block fluid flow within the eye and cause glaucoma, when high pressure damages the optic nerves.

SOURCE:

American Diabetes Association.

American Academy of Ophthalmology.

Reviewed by Brunilda Nazario on April 29, 2021

SOURCE:

American Diabetes Association.

American Academy of Ophthalmology.

Reviewed by Brunilda Nazario on April 29, 2021

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How can I be tested for diabetic retinopathy?

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