Intravitreal Bevacizumab and Triamcinolone in Diabetic Macular Edema

Inclusion Criteria: * Diabetic macular edema (central macular thickness greater than 300 mm on optical coherence tomography ) Exclusion Criteria: * history of glaucoma or ocular hypertension (defined as an intraocular pressure higher than 22 mmHg) * an ocular condition (other than diabetes) that, in the opinion of the investigator, might affect macular oedema or alter visual acuity during the course of the study (e.g. retinal vein occlusion, uveitis or other ocular inflammatory disease, neovascular glaucoma, Irvine-Gass Syndrome, etc.) * systemic corticosteroid therapy history of thromboembolic event (including myocardial infarction or cerebral vascular accident) * major surgery within the prior 6 months or planned within the next 28 days