Is there an ion-select ok event?

Is there an ion-select ok event like the ionCancel event?
In my case i prepopulate an ion-select and the user has to confirm the selected option or change to another one.
If he changes the option thats ok because i can use ionChange on the ion-select to call my function.
But i need to call the same function when the user presses ok.

How to do this?