If I understand you correctly, you are having issues with a significant floater—that you have not had any surgery, i.e. Vitrectomy, and that your ophthalmologist has discouraged such surgery. My first question would be how long you’ve had this? If you’ve given it time to settle down and it is still affecting your vision, if I were you, I would request a referral to a VitreoRetinal specialist. It took a long time for my ophthalmologist to recognize what I was complaining about. In fact it wasn’t until I saw his partner that I got a referral to a specialist. She told me they couldn’t help me but would refer me. Your local ophthalmologist doesn’t have to be the end of the line for you.