I have worn glasses for the last 20 years and at only my mid-30's I hated it. It is AMAZING to know bew able to see in the night when my toddler wakes up. Not having glasses steam up when I walk from outside to inside is something I won't miss.
The team at Reading were great. They were truthful with what was going to happen and didn't try to make it sound easier than it was. For the ten minutes of being uncomfortable it is really worth it, and I would recommend it as it truly is not painful.