I have abandoned using coatings on my eyeglasses. Areas of the coatings eventually deteriorate after repeated cleanings and reduce visibility. This is not a scratch issue since I carefully wash my lenses before drying them with a microfiber cloth. With the lens coated, I had to replace the lenses about every year. Without the lens coatings and by continuing with careful cleaning, my glasses have lasted over four years and are virtually scratch free. I should mention that initially I was a little annoyed by reflections but soon adjusted to this change. I concur with the other reports that coatings cannot be repaired and that lenses must be replaced. So the bottom line is" Is the benefit of having a $20 coating worth more to you than having it wear out in a year and cause the need to replace your lenses?"