Comment by MarkusWandel
7 hours ago
Maybe this isn't proper, but, what I do is wet them, rub them with a tiny amount of dish soap, then rinse them under the hot water tap.
Then blow the droplets off both sides and let the rest air dry. We have soft water here, so no water spots. No rubbing dry with any kind of cloth.
Tap water if chlorinated is not great for the coatings on modern glasses I've been told. YMMV if you're not in such a place.
I mix my own spray bottles from dish soap, non chlorinated water and a bit of rubbing alcohol actually. Water is softened.
40+ year glasses wearer here who learned this perhaps only 10 years ago, I think this is the correct way. The one annoying part is the difference that the glass coating makes. The water just falls off some of my glasses with barely as much as a light tap. Others length tend to hang onto the water in beads, so I have to actually wait for it to dry (or walk around with water spots, which I also do when impatient...)
Use lens paper to blot the water off.
I don't have soft water so i blot the lenses dry with lens paper. Works amazingly and my lenses last so long since i switched to the dish soap method.