There is a difference between being blind and not being able to see. 

In the ninth chapter of the Gospel of John, Jesus heals a man who has been blind from birth and sets in motion a chain of events that finds this man betrayed by his family, denied by his friends and neighbors, and thrown out of his church by his religious leaders. 

Even though he was the one who was born blind, we find him surrounded by people who cannot see who is standing right in front of them.