Let us know how it goes! I currently am freaking out about a brain tumor as well! I went to my doctor and she did that eye test thing too and she told me I don't have a brain tumor but after hearing what wegngis said I am afraid she may have just been trying to calm my fears. I went to the eye doctor and he said everything looked fine as well but I just don't know if I believe them without an MRI. See, I'm having some pressure behind my eyes and even though it may be due to sinus I highly doubt it, mostly because of headaches every day.
Anyway, enough about me, I just want to make sure you are okay. Let us know how it goes! I have a feeling you are fine but the doctor knows what's best and I'm guessing they will give you the results right after the MRI but I'm not 100% sure about that but hopefully I'm right so that you'll feel okay :)