When buying a pair of reading glasses, whether over-the-counter or prescription, keep in mind that glass lenses are less likely to scratch than plastic, but they will shatter more easily and weigh more. Shop around for tempered lenses that fit securely in the frame.
If you lose the hinge screw that holds an earpiece to the frame, use a small safety pin or paper clip for a quick fix.
Make your glasses fit more securely on your face by tightening the hinge screws with a jeweller's screwdriver, or use the tiny screwdriver that comes with a sewing machine, the point of a paring knife, or a letter opener.
If a lens breaks cleanly, you can hold it together temporarily with a little transparent tape at the top and bottom of the crack.
Clean lenses with soapy water or a drop of vinegar, vodka or surgical spirit. To prevent scratches, do not rub plastic lenses until you've rinsed off all the dirt.
Do your glasses fog up when you come in from the cold? Before heading out on a chilly day, just rub a thin coat of soap on the lenses. Then polish them until clear - this technique provides instant waterproofing.
Do the lenses tend to pop out of your half-moon glasses? In an emergency, put putty rubber, Plasticine or any other sticky substance in the corner of the lens to hold it in place.
To secure a loose lens in a pair of full-frame glasses, tighten the set-screw near the hinge.
