This sounds so familiar to me. When I thought I had a brain tumor, I didn't believe the ct scans either and went for the MRI at my request. And all because of googling!!! You need to stay off there for one thing, it scared me to death.
I suppose an MRI would be better, that's what google says, BUT MRI's cost more, and I sometimes wonder if they don't tell you that for monetary purposes. I actually had a dr. who told me that a ct scan would pick up a tumor easier than an MRI.
I do know this though, if ct scans were useless in detecting tumors, they wouldn't use them. Think of the lawsuits these hospitals would have on their hands if a ct scan missed one. And I used to read TONS of brain tumor survivor stories (don't do that!!!) and everyone of those people who had a brain tumor had a ct scan that detected it early.
And yes, anxiety can cause blurred vision. Go to *****.com and read the list of anxiety symptoms there, I believe that blurred vision is one of the symptoms.
You don't have a brain tumor, you, like me at one time, just think you do. But you don't, I guarantee that the ct scan would've picked it up, and nothing would have had time to develop in just 5 short months. It takes years for those things to grow and by the time you're having symptoms, you bet a ct scan would pick it up.
All the best,