> It also builds on previous work about cataract surgery that showed lower rates of dementia over time in adults who had had their distance vision restored by h

> It also builds on previous work about cataract surgery that showed lower rates of dementia over time in adults who had had their distance vision restored by having surgery. This study does not (by what I read) directly address your question, since it doesn't say anything about whether the participants in this study had cataract surgery, LASIK, or anything else, or whether they even factored that in. But, evidently some other studies have been done on this.