I had an elderly GCC, Mozart, that was completely blind in one eye due to injury and then developed cataracts in both eyes severely limiting her vision. I had her about two years before she passed and this was what I picked up from caring for a blind bird:
I had everything she needed on the bottom of her cage. Food dishes, water, hidey-hole, toys, heater. I kept everything in the same spot. Whenever she was away from her cage (due to traveling), when she came back she'd run around the bottom of the cage and check each of the spots to make sure her things were still where they were supposed to be. On the sides of the cage I had platform perches out the wazzoo that were staggered so if she ever fell off of one she'd land on the other. It took months but eventually she figured out they were there and how they worked so she had full run of the cage. All the perches in the cage were platforms of some type, either solid wood, wire ones, or the multi-dowel corner ones. She did best on solid wood platform perches. If she had a new travel cage or vacation cage or something, when she first went in I'd lure her to the important places (sleeping spot, food/water spot) with treats so she'd know the lay of the land.
Everything had a verbal cue. Stepping up, stepping down. Always announced that I was going to handle her before I did, i.e. "pets" before petting or "name of treat" before offering her it, etc. so she could expect me near and not accidentally attack. She had a toy with bells on it that she'd ring if she needed me instead of screaming. That worked out well, but I felt like a bit of a butler.
She really loved toys that made noise.
She couldn't tell which way I was moving when I held her and walked, so I always had a hand around her side incase she lost her balance by trying to brace for me going a different direction.
All that said, when she was out, she was a crazy explorer. I had to make some draft snake tube-things for the edges of my counter top because she'd just put her beak down to the counter like it was her walking stick and RUN. She was an old girl and even having her flight feathers, if she went over the counter edge, she'd just drop like a rock. She also still loved shreddable toys, you just had to let her know they were there - if I held one near her and started tearing it up so she could hear what I was doing, she'd come over and start playing with it. Otherwise she wouldn't know it was there.
Hope that helps. Good luck on your little dude's recovery!