Abstract
The overall number of patients with Diabetic retinopathy (DR) will continue to increase in parallel with the increasing global pandemic of type 2 diabetes. Diabetic retinopathy is the most common cause of visual loss in United Kingdom. A systematic medline search was conducted initially using the following keywords: clinical trials, diabetic retinopathy, hyperglycemia, macular edema, visual loss. Relevant abstracts and computer links to these abstracts were reviewed and a preliminary list of possible articles from this search was compiled. Next, the original articles from the list were retrieved and evaluated. Based on landmark of data, DR have become preventable by controlling hyperglycemia targeting HbA1c<7.0%, with other multifactorial treatment.
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