Pretty sure that the animal trials had restoration of some functionality even in the subjects who had complete degeneration, but it has been awhile since i read the full reports
safety and efficacy are always phase I... there is a reason they have not released the full results... THERE IS TOO MUCH DATA
To safely slow the progresion of blindness and stabilize, is the "current goal". It has been done with 100 percent improvement in animals. thanks fordwill1953.