Once Sir C has gone blind, two weeks max I reckon, I doubt that he'll be the sort of

[Sir C]

gentle and wise blind person one sees in the movies. You know the type, "My eyes may be blind but I still see so very much".

He'll be one of those foul, irascible old blindoids that shouts all the time and hits small children with his white stick.

Good job I'll still be able to find your mum, h. Her pungent odour will esnure she is identifiable from some distance.