I didn't even have to be dilated for this exam. Instead, they did a retinal scan with the OptoMap, made by a Scottish outfit called Optos. It uses a laser to scan the eye, generating a 200°-wide digital image of the retina, and requires no eyedrops. Traditional optical equipment only provides a 30° view of the retina. It's pretty neat to finally have an eye doc point out what he's looking for in an exam. Plus, if there's something he was concerned about, it's trivial to mail the images off to a retinal specialist or other colleague for further review.
And no, despite my status as a privacy freak, I don't care that images of my retina are sitting on someone's disk. You can nab my fingerprints off a pop can I discard, and you could get a retinal scan out of any security system that needed to save it anyways. I put a lot more trust in my doctors than I do any employer (whether or not they use biometric security devices.)