Ophthalmology office. Masked patient and doctor - Covid 19. Scan of the retina, an examination that allows you to precisely visualize the different parts of the eye. This imaging makes it possible to observe the retina in order to detect, for example, a retinal uplift with edema or a diabetic retinopathy. It is used to monitor wet AMD about every two months and complements the fundus to see if an injection of treatment is needed. OCT is also used to examine the optic nerve, and therefore screen for or monitor glaucoma.