I am a big Costco fan, had an eye exam and purchased 2 sets of glasses over a year ago. The problem is you cannot purchase lenses or new glasses past the year exam without having a new exam.
The coating is wearing off, no problems with eyesight and they won't replace the lenses at my expense. Other optical places will gladly make glasses for you but Costco wants to get the cost of the exam too. I'm going elsewhere for glasses!
Why do I need to get an exam just for new lenses or eyeglasses? Target was willing to do it for me.