How do you manage your child's eyesight?

I have been wearing glasses since high school, but now I live without them after having LASIK surgery.

I'm happy that I can see distant objects clearly even without glasses.

Since I understand the discomfort of wearing glasses, I think children also need to have their eyesight monitored, but I don't know how to do it.

There's nothing that comes to mind besides showing less of the phone.

I want to know how others are doing it.