Intravitreal Injection Versus Sub-Tenon’s Infusion of Triamcinolone Acetonide for Refractory Diabetic Macular Edema: A Randomized Clinical Trial

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Abstract
Purpose. To compare the effectiveness of posterior sub-Tenon’s infusion (STi) and intravitreal injection (IVI) of triamcinolone acetonide (TA) for treatment of refractory diffuse diabetic macular edema.