Around 10 years ago, while still in my 40s, I was diagnosed with Central Serous Retinopathy, CSR, the cause of which is unknown, but may be tied to autoimmune disorder. It's a condition in which fluid builds up near the retina:
https://www.medicalnewstoday.com/articles/320606
What characterizes CSR is a sudden vision loss. I recall what happened pretty vividly. I went into a restaurant one day, asked for a menu, and I could not read it. It was blurry. It was totally sudden and confusing to me. I saw an opthamologist, who in turn referred me to a retinal specialist. The retinal specialist did a dye test- I was injected with a dye and then my eyes were photographed once the dye passed through my veins. I reviewed the laser photos with the retinal specialist. They showed assorted pockets of fluid, which she called "blisters" of fluid. And they were close to my retina. They were causing the blurriness.
She explained there were two possible treatments, one is to do nothing, and eventually the blisters hopefully will seal themselves and resolve, and the other is to do a laser surgery to burn out the fluid blisters. She was reluctant to do the laser for blisters too close to the retina as she said it was risky. And in my case I elected to await resolution and they did resolve.
Scott if you are male and age 30-50, this is the high risk group for CSR. I was 47 when diagnosed. The good news is that in my case it was temporary and went away with time. But this is what could be going on here. Good luck with your appointment.