Welcome to Mayo Connect. I took a quick look, and the person you are responding to made this post over 5 years ago, and may not be currently active here.
When you said "...that is why I'm sooooo frightened of having this done" were you referring to cataract surgery in general, or that particular implant?

Cataract surgery is generally very safe and effective with success rates between 96% with multi-focal lenses like the Restor, and 99% for standard lenses. Compared to the alternative, which is eventual blindness, this seems very safe to me.

Many of those who do have post-surgery issues can have them corrected with a very simple in-office procedure. My husband had a 5 minute laser procedure a few months after cataract surgery on one eye to clear up a little blurriness. The other went perfectly.

Also, keep in mind that the poster had their cataract surgery over 15 years ago - VERY early days for the multi-focal lenses. There are many more choices now, and surgeons can match lens choice to the patient's eye and preference.

Maybe you can do what I plan to do when I see the surgeon in May - discuss my options, including specific implants, then go home and research complication rates. (I already did this with my surgeon.)
Sue