I have a brain stem glioma and see similar things in my vision including large black spots that I cannot see through but I can see above below and both sides. Doctors say it is nothing but the tumor messing with my vision but I don't see it all the time. Can you help?

It would be foolish to attempt to diagnose you based on symptoms posted on the Internet.

I would believe what Physicians are telling you.

I agree. Our opinions on your doctor's advise won't do you any good. Listen to what the doctors are telling you. Anyone with a diagnosed condition will tell you there are good days and bad days when dealing with medical conditions. Not all symptoms will show themselves 100% of the time. Be thankful of these breaks.

This thread will be closed, because the question you are asking has already been answered to you by your doctor.