A blind man from Minnesota is now able to see his wife for the first time in 10 years after being fitted with a bionic eye. 

Allen Zderad, 68, was diagnosed with a degenerative eye disease 20 years ago that left him blind. 

Thanks to the Mayo Clinic in Minnesota, he was able to use a prototype of a device called "Second Sight" that uses pulsating lights to allow him to see and interpret the shapes of people and objects. 

When the doctors turn on the device, Allen is filled with tears of joy when he is able to see his wife for the first time in 10 years.