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Diabetes - How are anti-VEGF medications used to treat diabetic retinopathy?

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Researchers have found that a chemical called vascular endothelial growth factor, or VEGF, is critical in causing abnormal blood vessels to grow under the retina. Scientists have developed several new drugs that can block the trouble-causing VEGF known as “anti-VEGF” drugs. They help block abnormal blood vessels, slow their leakage, and help reduce vision loss.

Certain anti-VEGF treatments are approved for a condition known as “wet” age-related macular degeneration (AMD), in which abnormal blood vessels grow underneath the retina. These unhealthy vessels leak blood and fluid that can swell and scar the macula (the central part of the retina), and vision loss may be rapid and severe.

Since anti-VEGF therapies have shown good potential for slowing vascular leakage and preventing vision loss associated with wet AMD, ophthalmologists (Eye M.D.s) are using them to treat other causes of macular edema. If your ophthalmologist has diagnosed you with diabetic retinopathy, retinal venous occlusion, or other conditions, you may benefit from anti-VEGF treatment if other therapies are not producing the desired results or if your ophthalmologist thinks that anti-VEGF therapy is the best first course of action.

Treatment with the anti-VEGF drug is usually performed by injecting the medicine with a very fine needle into the back portion of your eye. Your ophthalmologist will clean your eye to prevent infection and will administer an anesthetic into your eye to reduce pain. Usually, patients receive multiple anti-VEGF injections over the course of many months. There is a small risk of complications with anti-VEGF treatment, usually resulting from the injection itself. However, for most people, the benefits of this treatment outweigh the small risk of complications.

  

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