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Step by step, bionic engineers are transforming lives in ways that barely could have been imagined until recently with researchers perfecting ways to make the disabled walk and even the blind see. Barry Petersen reports.

John Blackstone reports on an artificial retina that could restore partial vision to the blind may soon be approved by the FDA. Then, Erica Hill talks to Dr. Jennifer Ashton about how the device works and how it could change the lives for people with certain types of blindness