The spectacle industry has taken to augmented reality like a duck to water. They have cottoned to the fact that a little AR camera-work helps replicate the vital stage of letting people try on glasses.
Silhouette, the makers of rimless spectacles have developed a web page and an iPhone app Silhouette Virtual Mirror that lets you test out spectacles on yourself without having to go into the shop and try them on. The web thing is here, and the free app is called Silhouette Virtual Mirror. For a bit I thought that would actually turn the phone into a mirror, which I would like, but no: it just uses a picture of you and superimposes a pair of spectacles on it.
