Even if you bought your reading glasses from a store instead of an optometrist’s office, they still need special care. Any glass or plastic lens can scratch and pit, making it hard to see through them. Most scratching and pitting is caused by improper cleaning.
The easiest way to keep your glasses clean and minimize the risk of scratching and pitting is to buy a system. Optometrists sell containers of cleaning fluid along with soft, lint free cloths, or cloths already saturated with cleaning liquid. These are quite expensive, but they’re very safe for your glasses, prescription or otherwise.
Since the main ingredient of this cleaning liquid is alcohol, if you want to save money, you can buy rubbing alcohol from the health care section of your grocery or drugstore. Alcohol dries quickly and doesn’t streak, but if you don’t wipe it quickly, you won’t get smears or splashes off the glasses.
Dish washing liquid diluted with water will clean lenses and frames of oil and dirt. The most thorough cleaning is done by making up a small bowl of a drop dish washing liquid and warm water. Dip your glasses into the mixture and rub with your wet fingers. Rinse well and wipe dry with a soft cloth. Alternately, you can wet the glasses, put a drop of dish washing liquid on each lens and rub with your wet fingers. Rinse and dry.
There’s third mixture that’s more convenient and works well in a spray bottle. Mix one quarter cup of plain ammonia, one teaspoon of dish washing liquid and a cup of water. Stir this together and spray it on your glasses, rinse and dry.
Always clean the frames when you clean the lenses. Oil from your face and fingers is acidic and will degrade plastic frames over time.
Don’t use tissue of any kind to either clean or dry because they contain small fibers that can damage glass or plastic lenses.