Sight might be confusing for someone who has never seen and maybe those who look at the world in a different way are ones who can see other things that you might miss. When you are blind other senses get more enhanced and then you appreciate little things more and more and in this movie the one who got sight for awhile was confused by it and it is a true story,
https://youtu.be/wvI4HvGvHyA?t=9