**Abstract**

Diabetic retinopathy (DR) is a progressive microvascular disease considerer as the most important cause of acquired vision loss in the world. OCT angiography (OCT-A) has drastically improved the diagnosis and follow-up of DR showing alterations before changes in the fundus will be visible. With OCT-A, it is possible to quantify several parameters such as the macular vascular density (MVD) and foveal avascular zone (FAZ). This new technique will be important for early detection, follow- up, and monitoring treatment response. OCTA is a very promising image technique that is continually improving and offers numerous advantages over FA in DR management; nevertheless, there are technical limitations that must be improved.

**Keywords:** diabetic retinopathy, retina, optic coherence tomography
