I'm short sighted. I wear glasses at work. But I don't put them on when I'm off to work, after work or when I'm out on weekends. I choose not to see clearly on these occasions because there's no need to and I don't wish to. Blur vision lowers my awareness of the surroundings. I don't have to care about what's happening around me or whether people are looking at me. It's a good way to allow me to be in my zone with a better peace of mind. It's a relief to not be able to see clearly for a while.