That windshield-wiper/dust description is just PERFECT! I've been describing the effects for years to folks, and never came up with anything as descriptive as that :)
And thank you for taking the time to share your testimony - so many people don't take the time (and that means so many people end up having all kinds of invasive treatments they don't need to have). Every testimony DOES make a difference, and I appreciate that "bunches"!