Anewbioniceyeimplantcouldallowblindpeopletorecognizefaces,watchTVandevenread.NanoRetina'sBio-Retinaisoneoftworecentattemptstohelppatientswithage-relatedmaculardegeneration,whichaffects1.5millionpeopleintheU.S.Althoughasimilarimplant,SecondSight'sArgusII,hasbeenonthemarketinEuropes