My fun fun eye surgery was to remove a stye that had hardened into a chalazion. This didn't involve any actual needle/scalpel work on the eye itself, but did require flipping my eyelid inside-out and cutting into the back with a scalpel. The local anaesthetic worked great. A side effect of the eyelid-flip (I think) was that my eye rolled into a position that wasn't seeing anything.

Overall, it was kinda like going to the dentist, but I could keep chatting with the doctor through the whole thing. The ability to keep communicating was great for keeping things chill. (However, one must be careful not to laugh while there's a scalpel near one's eye.)