Check out Eyenetra. http://eyenetra.com http://eyenetra.com I'm not directly associated, but one of my friends was an early employee who worked on some of the

Check out Eyenetra. http://eyenetra.com http://eyenetra.com I'm not directly associated, but one of my friends was an early employee who worked on some of the early prototypes and helped set up a location in India. They make a cheap (a few thousand dollars vs tens/hundreds of thousands of dollars) and compact (Read: portable) eye-exam device that interfaces with a smartphone for its camera and processor. Think of a traveling doctor bringing eye exams to patients in remote villages. Pair that with some of those cheap adjustable glasses (http://www.ted.com/talks/josh_silver_demos_adjustable_liquid_filled_eyeglasses http://www.ted.com/talks/josh_silver_demos_adjustable_liquid...) and you've got a means for providing first-world eye care to the rest of the world. I think the company is still based in Cambridge, MA.