Perhaps you have sometimes wondered: how would you even begin to make a film about going blind and being blind and what that means? How, when the subject is so profoundly and inherently uncinematic? Or maybe it’s other thoughts that keep you awake at night — such as when we all finally receive our £350 million a week plus free puppy, where will we be expected to keep them? — but even if that’s so you’ll still find Notes on Blindness to be a singular achievement, as well as a truly wonderful one.