"Nothing." I quickly threw it away.
When I got out of the hospital, I had some boxes to go through of things my mother kept. There were a lot of boxes. I was in many hospitals for 4 years. While going through a box, a caregiver found an old eyepatch. I don't wear one now so she wouldn't know what it was.
I was lucky. My eye was only patched. Some places will sew it up.
It's been a process, but I use that eye again. It's not the greatest, meaning it is still weak, but no one would ever patch it now. I did something similar to Edward Taub's Constaint-Induced Movement Therapy: use the weak one. He did it with arms, and I did it with eyes. Look it up. People are being amazed.
Other posts on vision:
"I Can See!" http://braininjuryknow.blogspot.com/2010/12/i-can-see.html
"A New Therapy" http://thoughtfulveg.blogspot.com/2010/12/new-therapy.html