I’m so frightened of going blind

I’m so so frightened that I will just wake up blind or something will happen to blind me. When I have a headache or when I’m just particularly thinking about it I will stay up all night in case I have an aneurysm and just wake up blind. I’m also frightened that in the night I will lose control of my hands and gouge my own eyes out. Even thinking about it now is making my heart beat go up out of fear. I have constant intrusive thoughts about it like when I pick up a knife I feel the urge to stab it in my eye and just calmly walk out into the street with blood spurting out. I feel like it’s inevitable that I will be blinded and I’m just counting down the days until it happens.