24 years ago, a tumor was discovered behind my left eye. It was wrapped around the optic nerve. I had double vision one morning, but still went to work with my left eye closed. After about 30 minutes, I thought that this is stupid to try to work, I need to find out the why.
I had an X-ray, and was sent home. Then called back for a CT scan and sent home. Then called back for an MRI. I again went home (2 miles) and was called back to be admitted to the hospital four four nights. I wore an eye patch for about three weeks, and did not need it anymore, because my brain blocked out the center of my vision on the left eye. I still have double vision, but not really experiencing it because of the blacked out center. I am surprised this didn't happen to the OP. I had heard a story about a guy who wore goggles that inverted everything 180 degrees. After 2 or 3 weeks, his brain flipped the image for him. After reverting back to his regular glasses for a few weeks, he was seeing normal. Two doctors confirmed that this is legit.
I can't catch anything, but can still shoot pretty good. I am amazed that I can still hit the thin cut shots. Sometimes, I close my left eye.
I tried wearing a patch, and converted clip-on sunglasses by cutting it in the center and using a black marker to black out the lens. That did not work well, as I could still see the perimeter.
I considered buying contact lenses that look like an 8-Ball, to use during a tournament or other long session. Price was too high, and they don't last a long time.
I hope your vision gets better.