@mopi, I have been on-the-road and am happy that I opted to opted to open your message tonight!
I was diagnosed with a BRVO quite a few years ago. I did not have any underlying conditions before my BRVO diagnosis. It came on suddenly one night as I saw sparkling lights during the night with my eyes closed. In the morning I called PCP, who sent me to opthamologist, who got me in to see retina specialist next day. I was amazed at the tests and scans that were performed to make the diagnosis and prescribe treatment. I had injections at regular intervals for (I'm guessing) 4-5 years. My scans along with the specialist's visual exam of my eye and retina, eventually showed that my leaking vein had stopped leaking and I was temporarily taken off injection and checked routinely until my doctor team said that I didn't need the injections anymore - unless the leakage began again. He released me to my opthamologist, who keeps a close watch for any reoccurrence. I have not needed an injection for @ 4 years. My eye doctor says I'm fortunate that I did not loose all of vision in my left eye. I don't know how common or rare it is to get off the injections.

I found the injections to be uncomfortable, but not painful. The retina doctors who treated me were amazing. I learned that it was best for me to get the shot early in the morning, and to spend the rest of the day doing nothing, except lying down with a cool wash cloth in a darkened room. My eyes were dilated, so I couldn't see anyway. I always took a tylenol before the office visit, and again in the afternoon. My biggest 'problem' was the floaters and the dark specks that floated across my field of vision for a few days. My girlfriend, also getting injections, used to laugh about swatting imaginary bugs when we had those black specks.
I have partial vision in the left eye. It is like looking thru a blurry grey cheerio. My right eye compensates.

Let me know if I can try to answer any questions. Let me know what your husband finds out in December 🤍