Article Excerpt: The average auto refractor–that clunky-looking device eye doctors use to pinpoint your prescription–weighs about 40 pounds, costs $10,000, and is virtually impossible to find in a rural village in the developing world. As a result, some half a billion people are living with vision problems, which make it tough to read and work.
Full Article: http://tinyurl.com/7e2zcx3
Article Source: FastCompany.com