Figure 4: The identification of branch retinal vein occlusion (BRVO) vs. diabetic retinopathy (DR). (a) A trained convolutional neural network (CNN) identifies BRVO with a high probability possibly because of the presence of hemilateral macular edema (asterisk). (b) Bilateral macular edema might confuse the CNN. (c) Hyperreflective foci (arrows) might be a feature of DR. CME = cystoid macular edema.