A blind pensioner broke down in tears of joy as he caught sight of his wife for the first time in more than a decade, thanks to a cutting-edge new 'bionic' eye.
Grandfather-of-10 Allen Zderad is only the fifteenth person to undergo the clinical trials for Second Sight, a revolutionary new treatment being tested in the US.
Credit: The Mayo Clinic, Minnesota
The 68-year-old was diagnosed with an incurable degenerative eye disease called retinitis pigmentosa around 20 years ago, which progressed to the point of leaving him blind within a few years.
But now, doctors at The Mayo Clinic in Minnesota have implanted him with a new device which works by sending light directly to the optic nerve, bypassing the damaged retina.
While his eyesight is still currently very blurry and only consists of seeing variations in light, he has been able to identify different people and his own reflection in a mirror.
And when he saw his wife, Carmen, for the first time since going blind, he was overcome with emotion and they shared a tearful hug.
Doctors hope that as his treatment progresses, the quality of his eyesight will also improve.
The bionic eye consists of a tiny chip set into Mr Zderas' right eye, which works in conjunction with special glasses.