The refusal to open your eyes and see something in the outside world. Being forced to look inwards. Becoming aware of your inner world and or inner potential. When one ability is shut off, humans open other senses more. When one door closes a window of opportunity opens. For example, what you cannot see perhaps when your eyes are closed, you can hear better.
See Unknown, Eyes, Looking, Glasses, Blind Date, Blindfold, Blurriness.