Second Sight's Argus II bionic eye has already helped hundreds of patients around the globe with a rare disease called retinitis pigmentosa (RP) to see again. And yes, that includes several Americans who've gotten the system after it was approved by the FDA in 2013. Now, doctors at the Manchester Royal Eye Hospital have proven that it also works on another kind of degenerative eye disease: age-related macular degeneration (AMD). They've recently attached an implant onto the retina of Ray Flynn, an 80-year-old retiree who had lost his central vision due to the condition. Unlike retinitis pigmentosa, which could occur in anyone regardless of age, macular degeneration is one of the most common causes of blindness in adults 30-years-old and above. Also, AMD takes away a person's central vision, while those with RP usually lose their peripheral sight instead.