Optical Coherence Tomography Angiography Findings in Diabetic Patients with Macular Edema

Abstract

iabetic macular edema is one of the most common causes of vision loss in patients with diabetes. Fluorescein angiography provides valuable additional information compared to clinical examination or fundus photography but it has many contraindications. It requires venipuncture and intravenous injection of a dye that has a moderate risk of nausea and a rare but well documented risk of anaphylaxis and death. Optical coherence tomography angiography (OCTA) is a non-invasive modality that generates three-dimensional, depth encoded images of blood flow within the eye by using motion contrast. It offers an alternative angiographic technique without the drawbacks of FA. Areas of capillary loss obscured by fluorescein leakage on FA were more clearly defined on OCT angiography.