Can LASIK be repeated for long sightedness years after correction for myopia?
I intend to go for LASIK for my short sightedness. I am in my early 30s. I heard that once you have done LASIK once, you will not be able to do it again to correct long sightedness. Is it true that once you have corrected short sightedness with LASIK, you will not be able to correct long sightedness with LASIK in the future?
If by 'longsightedness' you mean 'presbyopia' or in Chinese 'Lao Hua', then LASIK is not a method that can treat this no matter whether someone had prior correction for myopia or not.
Again, LASIK is not and cannot be used to treat presbyopia per se.
You might find prior answers to this related question interesting: https://www.doctorxdentist.com/questions/is-it-possible-to-go-for-lasik-again-if-i-now-have-presbyopia
On the other hand, if someone did unexpectedly develop true longsightedness (hyperopia) some years after LASIK, it is usually possible to retreat/enhance with a second LASIK to correct the hyperopia. This can usually be done by relifting the original LASIK flap, or alternatively by performing a surface ablation/epiLASIK/PRK type procedure.