Abnormalities undiagnosed

I was in a car accident coming up to 3 months ago, a few days later I woke up and my vision was blurry. I went to the opticians and then the hospital who told me my eyes were absolutely fine but my vision was drastically deteriating due to abnormalities in the brain. There was no sign of trauma so the car accident was dismissed. I was then told my vision couldn't be measure because I was considered "blind". I was admitted to hospital for 2 and a half weeks, I had two lumber punctures in which the cells could not be properly tested on due to being sent to the testing labs too late, blood tests that came back clear and I was clear of diseases and infections. Small lumps on my brain have been detected but they have gotten smaller and are now less than 1mm big. My body scans are absolutely fine too. I was then put on steroids (prednisolone) for 2 months. My vision has completely improved and I now have 20/20 vision. Although the radiologist still seems to suspect Lymphoma to the brain the doctors are unsure because I have no other symptoms. I do not feel unwell or sick, there are no lumps, I don't feel tired or weak and I still have an appetite. The doctors are unsure and are going to see how I respond once I come off the steroids all together. Any idea at all how likely I am to have Lymphoma? Has anybody had anything similar to what is happening? Could this just be inflammation of the brain? I'm so scared and it's torture not being given any advice or reassurance