The pictures are beautiful Stephen and that video with the shoe made me a little sad.I'm so sorry. I can't comment medically but i have a blind from birth cat who is very happy, adjusted and does very well. If your cat goes blind i expect she will adapt, and if you want to see examples of how my Jenny does, she has a public facebook page (no account needed to view) at www.facebook.com/jennytheblindcat
stephen