Wilt wrote in post #19160780
Coated lenses are a way for the industry to have automatic need to replace the glasses, even when there is no prescription change.
The coating deteriorates and degrades the quality of vision...my wife had to get a new pair of glasses for that reason, and the optometrist told here there was no change in her prescription. And she did NOT abuse her glasses with improper methods of cleaning the surfaces.
Not sure how we got to eyeglasses, but it depends on the coating and the manufacturer. I have a few pairs where the coating is just fine years later, and I am not easy on my glasses, ie I use my shirt, kleenexes, without any spray, etc. 2 are from the Walmart eyeglass centers, and the other is about 2 years old now from a more expensive optometrist.
Without the coating, regular plastic lenses will scratch eventually. I have a couple of those too. Not terribly, but still scratched up.
As to camera lenses, I agree. If my L lenses are water resistant, I find I can just rinse them quickly at both ends, and just shake them until no more water comes out, and then wipe with a rag. Easy peasy, lol! 