First of all I’d like to say that you are entitled to your sense of style whether it moves with the times or against them. Kids in my area are getting into the 80’s styles again anyway, aviators AND wayfarers.
Second, you asked for it, here comes a lot of info…
If you use lens cleaner and cotton or microfiber cloths you shouldn’t have a problem with cleaning off fingerprints or damaging the finish. There is nothing that can be added over the mirror side of the lens, but the anti-reflection on the back of the lens can make it more comfortable to wear for some people.
The misunderstanding that I believe causes a lot of damage is that a lot of customers seem to think poly lenses are scratchproof, however there’s no such thing, they are just more scratchresistant than basic plastic lenses.
[Lecture mode] Paper towels and most tissues are made from wood. Wood fibers, even tiny ones, are bad for glasses. They can make little itty bitty scratches that you may not be able to see with the naked eye at first. Over time, they get bigger and bigger until one day you notice and it looks like someone’s been scrubbing your lenses with steel wool.
I have seen horrible, horrible things happen to all kinds of lenses and the owners never know how it happened.[/Lecture Mode]
As far as alcohol v. ammonia: ammonia can cause lots of damage to some types of lenses, but afaik alcohol is only bad for certain types of frames. We use 99% pure isopropanol in the lab to remove some of the markings used to align lenses during manufacture (ALL lens types) and also to clean the lens prior to applying any coatings. I know that the technology for different coatings has improved greatly in the last few years, so maybe alcohol used to be bad, but I’ve seen it turn one of the matte black RayBan frames into a nasty white/gray slpotchy color. (Apparently no one told the new lab tech about when not to use standard procedure.)
FOR YOUR OWN GOOD: For Og’s sake if your going to spend a lot of money on a good pair of Rx Sunglasses… GET A NECK STRAP before you go boating (I believe there are some that float). And make sure it’s snug on the frame and not set so loose that it could still fly over your head in a strong gust of wind.
BTW: My BF is a long-time lurker and he turned me on to the Dope about two years ago, I just haven’t had the two cents to give before so I just lurked under his account.