Intravitreal triamcinolone has been effective for central macular thickness reduction and concomitant visual acuity improvement in patients with diabetic macular edema (DME). VEGF is a very effective inducer of permeability, being 50.000 times more potent than histamine, and may exert its effect on retinal vascular permeability by altering tight-junctions proteins, such as occluding and VE-cadherin. Based on these principles, there is a rationale for anti-VEGF agents treatment of increased retinal capillary permeability conditions, such as diabetic macular edema. Therefore, the purpose of this study is to evaluate the effects of intravitreal bevacizumab and intravitreal triamcinolone associated to laser photocoagulation for diabetic macular edema.
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Best Corrected Visual acuity
Timeframe: One Year