If no one sees, they do not know what they are missing. You learn a way of doing things just like the sighted do, but in a way that fits you. I taught my sons girlfriend to knit and she can hardly see. But she does such good work. The doctor says she will be blind in 10 years time. (yea, right...when my son was 7, they said he would be deaf in 3 years. It is 22 years later, and NOW he is deaf.) Marie picked up such amazing knitting skills with just her feel. I teach her a new stitch, and two weeks later when I see her, she has done even more than I taught her.
My ex brother in law had a detached retina. He had to lay on his stomach for months. But he had to keep his eye muscles working. He would lay on the bed with his head down and arms hanging knitting. If the eye strain got too much, he would close his eyes and knit. His work is to die for. (He is fine now, and still knits)