Asklemmy

In the future, I highly recommend using Kimwipes to clean off your lenses day-to-day. They're little papers designed to wipe off lab equipment without leaving any scratches or residue, and you don't need to spray them with any cleaner either. Just a dry wipe until the lenses are clean. If I'm careful about how I use them, a wipe can be reused 2-3 more times before disposal.

Since I started using them, I've never had problems with the antiglare coating coming off.

Hi Costco glasses guy, I see you.

Use a sandpaper

A paste of baking soda and water on cotton balls worked well for me, albeit tedious.

I've had good results removing the coating with armor etch, but be warned that the uncoated plastic lens are now more prone to scratches. I was able to extend the life of my glasses about 6 months before I got annoyed with the microscratches building up, was able to save up for a new pair.

Just an FYI, I had that happen to my driving glasses a couple years back. My optometrist said that because you cannot leave glasses in a hot car as the heat destroys the coating... OK thanks for telling me AFTER the fact, where do you THINK I am keeping a pair of glasses that you designed specifically for my driving vision? And by the way, I've been wearing glasses for over 35 years and always had the anti-glare coating for night driving, what did you change that is suddenly making them self-destruct when they are stored where I need them???

Yeah they had no answers for me. But OP, if you left your glasses in your car, that's probably what happened to the coating.