The purpose of this study in to compare the efficacy of treatment of diabetic macular edema (DME) using Ranibizumab (Lucenti®), Aflibercept (Eylea®) and Aflibercept (Eylea®) plus Ranibizumab (Lucentis®).

It is a randomized clinical trial that will evaluate the efficacy of the combination of two substances currently used in the treatment of DME. Will be allocated in different four groups randomly pacients who receive treatment with intravitreal injections of ranibizumab, aflibercept or a combination of aflibercept and ranibizumab.

Interventions will be carried out with intravitreal injections in patients with formal indications of diabetic macular edema treatment previously assessed with complete eye examination in Goiania Eye Institute(Instituto de Olhos de Goiânia)

Patients will be divided into four groups:

• In the first group will be held three applications of intravitreal ranibizumab 0.1 ml, with one application every month and follow up with Optical Coherence Tomography on days 1, 3, 5, 10 and 30 following the application.
• In the second group will be held three applications of Intravitreal Aflibercept 0.1 ml, with one application each month followed by monitoring with Optical Coherence Tomography on days 1, 3, 5, 10 and 30 subsequent
• The third group will be held two applications of Ranibizumab 0.1 ml interspersed with one application of Aflibercept 0.1 ml in the second month and subsequent evaluation with Optical Coherence Tomography on days 1, 3, 5, 10 and 30.
• In the fourth group will be held two applications of 0.1 ml Aflibercept interspersed with one application of Ranibizumab 0.1 ml in the second month and subsequent evaluation with Optical Coherence Tomography on days 1, 3, 5, 10 and 30.

Inclusion Criteria:

• patients with Diabetic macular edema

Exclusion Criteria:

• patients without diabetic macular edema, or with diabetic macular edema with other disease that can make confuse about the diagnose