"What happens is that the system builds many inferior blood vessels in the eye to take the place of the vessels that are dying. And those blood vessels are not up to the task. And they bleed. They hemorrhage and they cover the eye inside with blood"

This quote by Mary Tyler Moore is describing a condition referred to as diabetic retinopathy. This is a condition that impacts people with diabetes and can cause vision loss. In diabetic retinopathy, the blood vessels in the eye become damaged and pass away off. In response, the body tries to change these vessels with brand-new, inferior ones. Unfortunately, these new vessels are not strong enough to manage the pressure and they start to bleed, causing the eye to fill with blood. This can cause vision loss if left untreated. It is necessary for people with diabetes to get routine eye examinations to find any indications of diabetic retinopathy and to receive treatment as quickly as possible.