Well, obviously I have one as well. I do some things to help her cope. She likes being in the bottom of the cage the most. So she has large crock food and water bowls down there. She has perches, a lot of toys, and wood blocks to stand on. At night, I only cover the top part of her cage and leave on a small lamp with a blue bulb in it like moonlight. She does eventually find new things I add to her cage, although sometimes it takes her a day or two. She is a total velcro bird, and that might have something to do with her lack of vision. She immediately makes a lunge for my chest when I get her out and wants to be cuddled up against me all the time. The first couple of weeks it helped for me to talk or cluck to her as I was moving around the room so I didn't suddenly come up on her, and frighten her. Now she seems to know where I am no matter what. But, when we are at the vet's, every time a person "suddenly" appears she spooks a bit. She doesn't know they are coming until they are 1-2 feet from us.
I wouldn't worry though about him climbing or anything like that. Merlin sometimes miscalculates where a perch is and you see her reaching with her little foot and she's 2" away. She moves over and tries again until she gets it right. And she even hangs upside down from the top of the cage and twirls, with just one toe attached to the bars. I used to worry about her doing such things not being able to see, but she is fine.
As for wings, well, Merlin has not made any attempt to fly. I think she knows better. She will try to run away, like from a towel, but not fly. So I have decided not to clip her. She is used to her wings and might start plucking or something if they are gone, and I don't want that. Let's just say though I'm not going to take her outside without a carrier, cage or harness just in case.
Keep us up to date on Remington, and I wish you both the best. And if the borna comes back positive, well, you have another person to talk to about it in me. And of course, coping with a blind bird. My vet did say most blind birds do just fine, and Merlin seems to.