A blind person can't participate in society to the same degree that a sighted person could, but the same is true of the entire world. We can (and arguably should) make their life easier by changing society, but unless you fix the root problem, they'll forever lack visual experiences.

From another angle, life without a human society still has its challenges. Adding a society removes some and adds new ones. Some people only have problems with these new challenges, some struggle with the old as well. These two scenarios should be distinguished, perhaps by applying the "social" and "medical" models appropriately.