It is not a tumor! 😉
Eriksgirl has uses my eyes as her personal gauge to see if I am near a seizure. Maybe that happened for her after my last seizure where my pupils were very different sizes, like someone with a concussion and this was before I hit the floor. I told her they were not off by much when she showed me the picture. She exclaimed they should be equal. 🙂
What I do know is that the Anisocoria (different pupil sizes) is relatively new for me, and not something I have had my whole life. This would make the Anisocoria most likely caused by Lyme, or MS. I think for either of these it would point to optic neuritis but my eyes are checked regularly (not to say that optic neuritis could not be missed). Other than that I have no great ideas other than a tumor, which I am pretty sure it is not that (recent MRI :-). (or I keep getting concussions, might explain my repeating myself so often to the kids)
I guess it will be something to discuss at my next neuro exam. I cannot remember the last time he examined my eyes. Fortunately, my optometrist has a really nice computer/camera that takes a picture of the back of my eye to look for problems. He is not a doctor, but he regularly checks the optic nerve.