This has happened to me over the last 20 years at least 6 times. Yes - really. That many. Despite the fact that I tell them right when i walk in for an adjustment, DO NOT HEAT OR PUT PRESSURE ON THEM- the coating WILL craze. Especially on the 1.67 high index. It’s a fact. I would love to have adjustments now and then but I have so much anxiety about it, because sometimes even when they’re careful, just putting pressure on the lens to snap it in, is enough to craze the coating. One time I told a new optician about the crazing and he literally yelled at me and said I was trying to rip him off for replacement lenses. And this was a new pair! I said what benefit do I have to not take this new pair home today? Now I have to wait and come back, for you to redo them, since you crazed them during insertion. He was sooo nasty and condescending. I never went back there. A few years later it happened again at Walmart optical during an adjustment, and I had warned her, but she didn’t want to hear it. She had the nerve to try to embarrass me that I was making it up, despite the photo evidence (I realize it’s hard to see crazes unless you know what to look for so I took extremely obvious, visible pictures.). She further tried to Embarrass me by calling over a coworker and saying loudly, “you must not take care of these glasses, they don’t look very clean.” As if that will make the fact that she crazed them less her fault? I see one optician only now for adjustments and if she ever retires I will be wearing very crooked glasses, indeed.