Contacts for astigmatism have a tiny weight on one side which keeps them oriented (enough) that they can cancel out mild to moderate asphericity. I'm surprised

Contacts for astigmatism have a tiny weight on one side which keeps them oriented (enough) that they can cancel out mild to moderate asphericity. I'm surprised LASIK still can't correct for astigmatism though, I know that was the case when it first came out but in principle I can't see why it wouldn't work.