I haven't ever heard of this happening before. I've known quite a few people over years, including my husband, who had this surgery & had no bad outcomes with it.
The surgery, according to my husband's doctor, said it sets you up for better results if you have to have cataract surgery later. After a life time of glasses, he went 5 years without them. Now that he is back in glasses, they are not the strong script that he had before them.
I'd be interested in hearing what these people had going on or was experiencing prior to surgery. Sad that it happened to them.
Another thought is, were these people properly screened & were they truly candidates for this surgery. Some doctors don't do their due diligence on patients & just run a "production" line for whatever surgery or treatment is popular at a time i.e. weight loss rue-en-y or sleeve surgery, weight loss drugs, etc.