Vitreous hemorrhage by itself usually doesn't cause permanent vision loss. In more-severe cases, blood can fill the vitreous cavity and completely block your vision. If the amount of bleeding is small, you might see only a few dark spots (floaters). The new blood vessels may bleed into the clear, jellylike substance that fills the center of your eye. Complications can lead to serious vision problems: Being Black, Hispanic or Native Americanĭiabetic retinopathy involves the growth of abnormal blood vessels in the retina.The risk of developing the eye condition can increase as a result of: ![]() Reducing your risks of diabetic macular edemaĪnyone who has diabetes can develop diabetic retinopathy.This buildup can damage the nerve that carries images from your eye to your brain (optic nerve), resulting in glaucoma. If the new blood vessels interfere with the normal flow of fluid out of the eye, pressure can build in the eyeball. These new blood vessels are fragile and can leak into the clear, jellylike substance that fills the center of your eye (vitreous).Įventually, scar tissue from the growth of new blood vessels can cause the retina to detach from the back of your eye. In this type, damaged blood vessels close off, causing the growth of new, abnormal blood vessels in the retina. Diabetic retinopathy can progress to this more severe type, known as proliferative diabetic retinopathy. If macular edema decreases vision, treatment is required to prevent permanent vision loss.Īdvanced diabetic retinopathy. Sometimes retinal blood vessel damage leads to a buildup of fluid (edema) in the center portion (macula) of the retina. NPDR can progress from mild to severe as more blood vessels become blocked. Larger retinal vessels can begin to dilate and become irregular in diameter as well. Tiny bulges protrude from the walls of the smaller vessels, sometimes leaking fluid and blood into the retina. When you have NPDR, the walls of the blood vessels in your retina weaken. In this more common form - called nonproliferative diabetic retinopathy (NPDR) - new blood vessels aren't growing (proliferating). There are two types of diabetic retinopathy:Įarly diabetic retinopathy. But these new blood vessels don't develop properly and can leak easily. As a result, the eye attempts to grow new blood vessels. Over time, too much sugar in your blood can lead to the blockage of the tiny blood vessels that nourish the retina, cutting off its blood supply. As diabetic retinopathy progresses, new blood vessels may grow and threaten your vision. Tissues in the retina may swell, producing white spots in the retina. Tiny bulges protrude from the vessel walls, sometimes leaking or oozing fluid and blood into the retina. In the early stages of diabetic retinopathy, the walls of the blood vessels in your retina weaken.
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