My mom has cataracts.

When I inquired about cataracts at my mom's ophthalmology clinic, they said there is a slight presence. I'm worried because some people undergo surgery for cataracts. I want to know how to prevent it and what to do to avoid it from worsening at this stage. I hope she doesn't need surgery. I'm worried even if it's just a little. Does cataract surgery have a risk of recurrence? I also need to take good care of my eyes.