Tuna has lived with me for the past several years now.
He has feline immune deficiency (Kitty Aids).
When I found him he was stumbling around, not seeing very well due to an eye infection that caused his eyes to bulge and loss of site in one eye.
He must be isolated from the other cats as he is contagious.
Initially the vet wanted to euphamize him ... I quickly went to another vet.
He is now in very good condition, happy, sweet as a clam and could live a healthy life for a number of years.
That's Newbie behind the pillow.