Subretinal Implant Successfully Tested On Humans, Makes Blind Narrowly See !

How many scientists does it take to properly install a lightbulb ? When that lightbulb is an implant that stimulates retinal photoreceptors to restore one's sight, quite a few - even if they disagree whether said implant should be placed on top of the retina (requiring glasses to supply power and video feed) or underneath, using photocells to channel natural sunlight.