To have true vision requires us to not to rely on the functions of the eyes, but to trust the direction of our hearts. Having sight through our eyes allows us to only see what's in front of us. Vision allows us to see sights/sites even if they aren't directly in front of us. It is imagination. It is faith. It is a process of looking beyond our circumstances. It is perceptual. It is observation. It is profoundly necessary to have a vision for you life.