Most (if not all) eyeglass lenses manufactured today are made of some type of plastic, which makes them lightweight and less costly. Unfortunately, plastic scratches easily. Scratched lenses are virtually useless, so if you want to extend the time between having to purchase new lenses of the same prescription. Try these tips:
-Never place your glasses lens-down on any surface. Whenever possible, place them inside a case when they are not in use.
-Don't dry-wipe your lenses, even with those special cloths opticians provide. Always use soap and water to clean them, and blot, don't wipe, the lenses dry.
-Never, even for one second, place your glasses where they might be knocked to the floor or sat upon. Hang onto them, even if it makes taking your sweater off a bit more awkward. You'd be surprised how many glasses get crushed when the wearer forgets he or she put them down "just for a second"!
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