University of Miami pathologist Richard Cote is using Yang's principle of a lensless microscope to pioneer a way to move a microscope across sample cells located on a fixed surface.

FORBES: Magazine Article

Here's the great news: looking at these sample shots (see crop above), it's abundantly clear that Nokia's fixed the camera's fuzziness problem.

ENGADGET: Nokia Lumia 920 camera fuzziness getting fixed in PR1.1 update