Another thing that is very interesting was discovered during the tests run by the neurologist at the hospital last Wednesday night. He held out a finger in front of me and said, "How many fingers do you see?"
I said, "Two."
He said, "You see two fingers?"
I replied that if he had asked, "How many fingers am I holding up?" I would say one - because obviously you are only extending one finger. But I see it with a second one right next to it. He then tested my vision with a red ball on a stick.
I have double vision. I had not noticed this previous to the test. I have noticed that reading takes more concentration. But, I hadn't noticed that there are two of everything. My mind just combines them.
Ever since that night, I have been having fun testing my eyes. It is obviously a nerve being affected by the tumour, not my eyes causing the double vision. My brain is receiving a bogus message. How can I be sure of this? Well, if it was a visual double image, covering one eye should remove one of the two images. It doesn't. When I cover one eye, I still see two images next to each other. Even weirder - it's not only on the left side. Covering either eye produces the same double image. And looking with both eyes open does not create four images - just two. So.... interesting, eh?