How do you treat the empty space inside a corn?

I'm still able to tolerate whether it's a corn or a wart on the sole of my foot, so I haven't gone to the hospital yet.

Every time I think about it, I look up information on the internet, and when I watched the video, I saw a sharp surgical knife cutting it out.

There are videos that almost stop bleeding, but the problem is that even if I touch it with my hand, I can't feel the core inside.

This is a substantial volume, and once you remove it, the inside will be empty, right?

It doesn't seem like simply applying ointment and sticking a bandage on the outside will solve the problem. How is this being handled?