He developed diabetes that eventually damaged his eyesight, and while medication helped the former stabilise, the latter was gone for good. Or so people thought. See, science of medicine has been making leaps and bounds while we weren’t looking (pardon the pun), and now, it’s possible to regain lost vision. Not just for humans, but animals too, and Duffy was one of them. His family signed him up immediately, and his surgery happened at the Veterinary Referral Center in Malvern, Pennsylvania.