This eye doctor's vision for eradicating avoidable blindness

At age 12, Andrew Bastawrous was told by his teachers that he was slow and inattentive. But the results of an eye exam explained why: he had very poor vision. Globally, as many as 2.5 billion people who need glasses don’t have them -- and are unable to reach their full potential as a result. Now an eye surgeon, Bastawrous shares his brief but spectacular take on eradicating avoidable blindness.