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Diabetic Retinopathy is the leading cause of blindness in people aged 25-74 years in the United States. In the initial stages, a patient may not experience any symptoms. As the disease advances, however, patients may experience symptoms such as blurred or distorted vision, and progressive visual loss. The longer a person has diabetes, the higher the probability of developing diabetic retinopathy. Diabetic Retinopathy is defined as either non-proliferative, with no symptoms and good vision, but with the presence of microaneurysms in the retina, or Proliferative Diabetic Retinopathy, associated with blurred vision and abnormal new, weak blood vessels, which can burst and bleed (called a vitreous hemorrhage). Identification of diabetic retinopathy, even if asymptomatic, can be detected by an ophthalmologist through a comprehensive retinal exam and a series of tests, including fundus photography, Fluorescein angiography, and optical coherence tomography. There are three major treatments for diabetic retinopathy, aimed at reducing further vision loss, including laser photocoagulation, injection of corticosteroids or Anti-VEGF into the eye, and vitrectomy. Although these treatments cannot cure diabetic retinopathy, even those with advanced retinopathy have a 90% chance of maintaining their vision if they receive treatment before the retina becomes severely damaged.