Help Me Fight Blindness and Brain Damage

I recently was sent to the ER for a panic attack, and while I was there, the doctors discovered I have a tumor in my head and say I need surgery ASAP to remove it. The surgeon told me the longer it's there, the more of a chance there is of it damaging my eyes and causing me to go blind, and it could potentially start causing brain damage. It's grown in size over time, and in my current situation, I can't afford the surgery, let alone the $5000 in medical bills that have already built up. So, I'm asking anybody that's willing to help to please help me. This is potentially a life-saving surgery that I need, but I can't afford it. Anything at all helps and is greatly appreciated.