I swear my late mother kept the same glasses frames for thirty years, just replacing the lenses when she needed a new prescription.
I went to LensCrafters with a new prescription, wanting both regular glasses to upgrade the ones I have and replacement lenses for my rather expensive RayBan sunglasses. The latter were four years old — my last prescription wasn’t that big a change, so I didn’t bother to have the shaded lenses swapped out. But now, four years on, they needed to be.
Not so fast. The four year old RayBans were discontinued, and the system won’t allow you to put new lenses in discontinued glasses. I had to buy the replacement model, which is just like what I have except for infinitesimal alterations in the design.
What a racket.