Eye-glasses for a billion poor people

Here's an article from the Guardian about a fellow named Josh Silver who wants to take a simple adjustable lens technology and apply it to low-cost eye-glasses so that poor people can have personally tuned prescription vision correction without the need for an expensive optometrist. Silver says,

"Things are never simple. But I will solve this problem if I can. And I won't really let people stand in my way."

This guy is my hero. This is an awesome story about the birth of an idea, the recognition of a problem, the connection made between the two, and the will to implement the solution, despite the tremendous obstacles of organization, distribution and shear cost.