My sister is having cataracts surgery next week

[ROBINDESBOIS]

I we want to paraphrase this sentence with operated how can I say it.
My sister is going to be operated on catarats next week.
My sister is going to have a cataracts operation next week.
Are these correct?
If not how do we use to be operated on?

[hermit]

"My sister is going to be operated on for cataracts next week."

[pjt33]

Or "My sister is going to have a cataract* operation next week."

* Sing.