From the BBC, 24 October 2014
Video journalists: James Dowd & Matt Margrett
Sargy Mann has been painting all of his professional life, first as a teacher and later as a professional artist. In his mid-30s he developed cataracts on both eyes, eventually leading to total blindness. He continued to paint.
Twenty-five years later, Sargy's work is highly sought-after by collectors, with paintings regularly selling for upward of £50,000 (US$80,000).
He spoke to BBC News about his life and gave an insight into how he continues to work.
"I had to sort of reinvent painting for myself. It seems sort of more or less impossible but if you're just determined to keep going, you know you get used to that.
Because if your subject is your own experience, then as long as you're having an experience you've got a subject. And that turns out to be true even into total blindness."