[thesmok]

> most people will have a disability (not necessarily permanent) at some point in their life

I've got an eye infection when I was a teenager. It has strongly tinted my vision white, so for a couple of days I could only see outlines of big objects highlighted by skylight. From this experience I found I could still walk my usual routes without wandering off the road, as I could recognize familiar telephone poles, trees, I even remembered all the ruts in the road.