Treatment methods for varicose veins

My older sister on my biological mother's side has been doing a standing job for a long time.

At first, they said their legs were swollen and painful.

Recently, I have been experiencing muscle cramps while sleeping and noticeable changes in my eyes.

Knobby veins? They are also protruding, indicating varicose veins.

I told you to go to the hospital because we are together, but the time...

They kept postponing, saying there was nothing. 😢

What kind of treatment is used for varicose veins?

Is it that I get better by taking medicine or by having surgery?

I'm curious.