Just got off the phone with my mom, my brother has been having difficulty seeing out of his left eye for a few weeks, the doc did an MRI and then a CT scan. Seems he has a 5cm Optic Nerve Meningioma. Apparently it's been growing so long it has deformed the bones in his sinuses. He is very weirded out but doing okay; hardest part so far... calling his daughter and letting her know whats going on.

He and I have a complicated relationship, but this is really knocking me for a loop. The idea he could lose his sight terrifies me.