Diabetic macular oedema is a common complication of diabetes, in which damage to the blood vessels at the back of the eye leads to swelling. Lasers have been used for some time to treat this but an alternative approach might be antiangiogenic therapy with anti-vascular endothelial growth factor. In October 2014, Gianni Virgili from the University of Florence in Italy, and colleagues, updated the review of the effects of these drugs.