Ok thank you very much.If this starts happening on my daily M Frame polarized lenses.. when I clean the lens, this coating will naturally rub off. I would suggest rinsing it off in the sink with water and lightly rub the flakes off with your finger. It's going to peel off anyways. This just gets the loose coating to fall off.
Then use a microfiber towel or bag and clean the lens. This knocks all the flakes off and gets the lens more presentable and less will be obstructing vision. The UV protection is still built into the lens.