Several years ago, a patient had a small-aperture corneal inlay implanted to treat presbyopia, as shown. The patient has since developed diabetic retinopathy requiring intervention. What procedure is compromised by the presence of the inlay? Applanation tonometry, focal laser to the macula, injection of vascular endothelial growth factor (VEGF) medications, fundus photography. Here, VEGFA is linked to diabetic retinopathy.