American Diabetes Association.

In advanced diabetic retinopathy the signals sent by the retina for nourishment trigger the growth of new blood vessels. American Diabetes Association. A procedure called cryotherapy uses cold to destroy abnormal blood vessels. This is called proliferative retinopathy. You cannot see things on the side of your field of vision. Robertson D expert opinion. If left untreated, these blood vessels may bleed, clouding vision or scar detaching the retina. Babies who need treatment are treated in the first few months of life. Doppler optical coherence tomography.

What if treatment doesn’t improve vision?

...