My local optometrist, Dr Lewis Cutter at Mountain Eyeworks, recently installed a fancy (and very expensive) new retinal scan machine. Here's one of the images - my left retina in this case.
The bright circle in the centre is the optic nerve. Dr C's annotated something he wanted to look more closely at so in the end I had to have a follow up exam using the traditional dilation method. I can tell you it's well worth paying the little extra for the machine to avoid this!