If you had lasik, can you do scleral buckle later if needed, or your cornea won't tolerate the buckling?

Not a problem: Lasik does not interfere with other surgeries such as buckles, that may be needed later.

Yes: Scleral buckling is around the sclera, not involving the cornea, so it can be done. It can result in nearsightedness again because of the buckling effect.

Scleral buckle: Scleral buckling is possible but it will likely change your prescription.